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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 >
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< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "preprocessor" > #include < limits> < / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #include " packager/media/base/aes_encryptor.h" < / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " packager/media/base/buffer_reader.h" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include " packager/media/base/key_source.h" < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " packager/media/base/media_sample.h" < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "preprocessor" > #include " packager/media/filters/nalu_reader.h" < / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include " packager/media/filters/vp8_parser.h" < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include " packager/media/filters/vp9_parser.h" < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/box_definitions.h" < / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "keyword" > namespace < / span > edash_packager {< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "keyword" > namespace < / span > mp4 {< / div >
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< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < / div >
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< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "comment" > // Generate 64bit IV by default.< / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > kDefaultIvSize = 8u;< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > kCencBlockSize = 16u;< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "comment" > // Adds one or more subsamples to |*subsamples|. This may add more than one< / span > < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "comment" > // if one of the values overflows the integer in the subsample.< / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "keywordtype" > void< / span > AddSubsamples(uint64_t clear_bytes,< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   uint64_t cipher_bytes,< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   std::vector< SubsampleEntry> * subsamples) {< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   CHECK_LT(cipher_bytes, std::numeric_limits< uint32_t> ::max());< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keyword" > const< / span > uint64_t kUInt16Max = std::numeric_limits< uint16_t> ::max();< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keywordflow" > while< / span > (clear_bytes > kUInt16Max) {< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   subsamples-> push_back(SubsampleEntry(kUInt16Max, 0));< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   clear_bytes -= kUInt16Max;< / 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" > 41< / span >   < span class = "keywordflow" > if< / span > (clear_bytes > 0 || cipher_bytes > 0)< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   subsamples-> push_back(SubsampleEntry(clear_bytes, cipher_bytes));< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   }< / 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 >   VideoCodec GetVideoCodec(< span class = "keyword" > const< / span > StreamInfo& stream_info) {< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "keywordflow" > if< / span > (stream_info.stream_type() != kStreamVideo)< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "keywordflow" > return< / span > kUnknownVideoCodec;< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "keyword" > const< / span > VideoStreamInfo& video_stream_info =< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keyword" > static_cast< < / span > < span class = "keyword" > const < / span > VideoStreamInfo& < span class = "keyword" > > < / span > (stream_info);< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keywordflow" > return< / span > video_stream_info.codec();< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   }< / div >
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< 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 >   uint8_t GetNaluLengthSize(< span class = "keyword" > const< / span > StreamInfo& stream_info) {< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "keywordflow" > if< / span > (stream_info.stream_type() != kStreamVideo)< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "keyword" > const< / span > VideoStreamInfo& video_stream_info =< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "keyword" > static_cast< < / span > < span class = "keyword" > const < / span > VideoStreamInfo& < span class = "keyword" > > < / span > (stream_info);< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "keywordflow" > return< / span > video_stream_info.nalu_length_size();< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   }< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a35e714ce7885037ea4299f0836e0d058" > 63< / a > < / span >   < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a35e714ce7885037ea4299f0836e0d058" > EncryptingFragmenter::EncryptingFragmenter< / a > (< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   scoped_refptr< StreamInfo> info,< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / 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 = "l00066" > < / a > < span class = "lineno" > 66< / span >   scoped_ptr< EncryptionKey> encryption_key,< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   int64_t clear_time)< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / 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 = "l00069" > < / a > < span class = "lineno" > 69< / span >   info_(info),< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   encryption_key_(encryption_key.Pass()),< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   nalu_length_size_(GetNaluLengthSize(*info)),< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   clear_time_(clear_time) {< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   VideoCodec video_codec = GetVideoCodec(*info);< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "keywordflow" > if< / span > (video_codec == kCodecVP8) {< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   vpx_parser_.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d5/dce/classedash__packager_1_1media_1_1VP8Parser.html" > VP8Parser< / a > );< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (video_codec == kCodecVP9) {< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   vpx_parser_.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html" > VP9Parser< / a > );< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (video_codec == kCodecH264) {< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   header_parser_.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d6/dc2/classedash__packager_1_1media_1_1mp4_1_1H264VideoSliceHeaderParser.html" > H264VideoSliceHeaderParser< / a > );< / 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 = "comment" > // TODO(modmaker): Support H.265.< / span > < / 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 >   < / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   EncryptingFragmenter::~EncryptingFragmenter() {}< / 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#ae8fd13a579fee2167167bcdbb9637dcc" > 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#ae8fd13a579fee2167167bcdbb9637dcc" > EncryptingFragmenter::AddSample< / a > (scoped_refptr< MediaSample> sample) {< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   DCHECK(sample);< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "keywordflow" > if< / span > (!fragment_initialized()) {< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / 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 >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   }< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "keywordflow" > if< / span > (encryptor_) {< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / 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 = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keywordflow" > return< / span > status;< / 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 >   < 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 = "l00100" > < / a > < span class = "lineno" > 100< / span >   }< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef" > 102< / 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 >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / 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 = "l00104" > < / a > < span class = "lineno" > 104< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "keywordflow" > return< / span > status;< / 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 > (header_parser_ & & !header_parser_-> Initialize(info_-> extra_data()))< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / 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" > " Fail to read SPS and PPS data." < / span > );< / 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 >   traf()-> auxiliary_size.sample_info_sizes.clear();< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   traf()-> auxiliary_offset.offsets.clear();< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "keywordflow" > if< / span > (IsSubsampleEncryptionRequired()) {< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   traf()-> sample_encryption.flags |=< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   SampleEncryption::kUseSubsampleEncryption;< / 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 >   traf()-> sample_encryption.sample_encryption_entries.clear();< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > enable_encryption = clear_time_ < = 0;< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < span class = "keywordflow" > if< / span > (!enable_encryption) {< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "comment" > // This fragment should be in clear text.< / span > < / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "comment" > // At most two sample description entries, an encrypted entry and a clear< / span > < / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "comment" > // entry, are generated. The 1-based clear entry index is always 2.< / span > < / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < span class = "keyword" > const< / span > uint32_t kClearSampleDescriptionIndex = 2;< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   traf()-> header.flags |=< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   TrackFragmentHeader::kSampleDescriptionIndexPresentMask;< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   traf()-> header.sample_description_index = kClearSampleDescriptionIndex;< / 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 >   < 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 = "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" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2" > 132< / 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 >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keywordflow" > if< / span > (encryptor_) {< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   DCHECK_LE(clear_time_, 0);< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / 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 = "l00136" > < / a > < span class = "lineno" > 136< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   DCHECK_GT(clear_time_, 0);< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   clear_time_ -= fragment_duration();< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   }< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / 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 = "l00141" > < / a > < span class = "lineno" > 141< / span >   }< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b" > 143< / 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 = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "keywordtype" > bool< / span > enable_encryption) {< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / 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 = "l00146" > < / a > < span class = "lineno" > 146< / span >   }< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156" > 148< / 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 = "l00149" > < / a > < span class = "lineno" > 149< / span >   < span class = "comment" > // The offset will be adjusted in Segmenter after knowing moof size.< / span > < / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   traf()-> auxiliary_offset.offsets.push_back(0);< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   < span class = "comment" > // Optimize saiz box.< / span > < / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / 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 = "l00154" > < / a > < span class = "lineno" > 154< / span >   saiz.sample_count = traf()-> runs[0].sample_sizes.size();< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keywordflow" > if< / span > (!saiz.sample_info_sizes.empty()) {< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / 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 = "l00157" > < / a > < span class = "lineno" > 157< / span >   & saiz.default_sample_info_size)) {< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   saiz.default_sample_info_size = 0;< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   }< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "comment" > // |sample_info_sizes| table is filled in only for subsample encryption,< / span > < / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < span class = "comment" > // otherwise |sample_info_size| is just the IV size.< / span > < / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   DCHECK(!IsSubsampleEncryptionRequired());< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   saiz.default_sample_info_size = encryptor_-> iv().size();< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   }< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   traf()-> sample_encryption.iv_size = encryptor_-> iv().size();< / 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 >   < / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3" > 169< / 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 = "l00170" > < / a > < span class = "lineno" > 170< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / 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 = "l00173" > < / a > < span class = "lineno" > 173< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > initialized = encryption_key_-> iv.empty()< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   ? encryptor-> InitializeWithRandomIv(< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   encryption_key_-> key, kDefaultIvSize)< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   : encryptor-> InitializeWithIv(< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   encryption_key_-> key, encryption_key_-> iv);< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < span class = "keywordflow" > if< / span > (!initialized)< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / 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 = "l00180" > < / a > < span class = "lineno" > 180< / span >   encryptor_ = encryptor.Pass();< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / 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 >   < span class = "keywordtype" > void< / span > EncryptingFragmenter::EncryptBytes(uint8_t* data, uint32_t size) {< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   DCHECK(encryptor_);< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   CHECK(encryptor_-> Encrypt(data, size, data));< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   }< / 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 >   < 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 = "l00190" > < / a > < span class = "lineno" > 190< / span >   DCHECK(encryptor_);< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   SampleEncryptionEntry sample_encryption_entry;< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   sample_encryption_entry.initialization_vector = encryptor_-> iv();< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   uint8_t* data = sample-> writable_data();< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "keywordflow" > if< / span > (IsSubsampleEncryptionRequired()) {< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "keywordflow" > if< / span > (vpx_parser_) {< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   std::vector< VPxFrameInfo> vpx_frames;< / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < span class = "keywordflow" > if< / span > (!vpx_parser_-> Parse(sample-> data(), sample-> data_size(),< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   & vpx_frames)) {< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / 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 parse vpx frame." < / span > );< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   }< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > is_superframe = vpx_frames.size() > 1;< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > VPxFrameInfo& frame : vpx_frames) {< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   SubsampleEntry subsample;< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   subsample.clear_bytes = frame.uncompressed_header_size;< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   subsample.cipher_bytes =< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   frame.frame_size - frame.uncompressed_header_size;< / div >
2016-02-22 21:58:55 +00:00
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < / div >
2016-02-23 19:58:24 +00:00
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < span class = "comment" > // " VP Codec ISO Media File Format Binding" document requires that the< / span > < / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < span class = "comment" > // encrypted bytes of each frame within the superframe must be block< / span > < / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   < span class = "comment" > // aligned so that the counter state can be computed for each frame< / span > < / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   < span class = "comment" > // within the superframe.< / span > < / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < span class = "keywordflow" > if< / span > (is_superframe) {< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   uint16_t misalign_bytes = subsample.cipher_bytes % kCencBlockSize;< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   subsample.clear_bytes += misalign_bytes;< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   subsample.cipher_bytes -= misalign_bytes;< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   }< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   < / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   sample_encryption_entry.subsamples.push_back(subsample);< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   < span class = "keywordflow" > if< / span > (subsample.cipher_bytes > 0)< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   EncryptBytes(data + subsample.clear_bytes, subsample.cipher_bytes);< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   data += frame.frame_size;< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   }< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   } < span class = "keywordflow" > else< / span > {< / div >
2016-03-04 18:42:55 +00:00
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   < span class = "comment" > // TODO(modmaker): Support H.265.< / span > < / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   < span class = "keyword" > const< / span > NaluReader::NaluType nalu_type = NaluReader::kH264;< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   NaluReader reader(nalu_type, nalu_length_size_, data,< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   sample-> data_size());< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   < span class = "comment" > // Store the current length of clear data. This is used to squash< / span > < / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   < span class = "comment" > // multiple unencrypted NAL units into fewer subsample entries.< / span > < / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   uint64_t accumulated_clear_bytes = 0;< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   < / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   Nalu nalu;< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   NaluReader::Result result;< / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < span class = "keywordflow" > while< / span > ((result = reader.Advance(& nalu)) == NaluReader::kOk) {< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < span class = "keywordflow" > if< / span > (nalu.is_video_slice()) {< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   < span class = "comment" > // For video-slice NAL units, encrypt the video slice. This skips< / span > < / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < span class = "comment" > // the frame header. If this is an unrecognized codec (e.g. H.265),< / span > < / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   < span class = "comment" > // the whole NAL unit will be encrypted.< / span > < / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   < span class = "keyword" > const< / span > int64_t video_slice_header_size =< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   header_parser_ ? header_parser_-> GetHeaderSize(nalu) : 0;< / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   < span class = "keywordflow" > if< / span > (video_slice_header_size < 0)< / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < span class = "keywordflow" > return< / span > Status(error::MUXER_FAILURE, < span class = "stringliteral" > " Failed to read slice header." < / span > );< / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   < / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   < span class = "keyword" > const< / span > uint64_t current_clear_bytes = nalu.header_size() +< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   video_slice_header_size;< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   < span class = "keyword" > const< / span > uint64_t cipher_bytes =< / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   nalu.payload_size() - video_slice_header_size;< / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   < span class = "keyword" > const< / span > uint8_t* nalu_data = nalu.data() + current_clear_bytes;< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   EncryptBytes(const_cast< uint8_t*> (nalu_data), cipher_bytes);< / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   < / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   AddSubsamples(< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   accumulated_clear_bytes + nalu_length_size_ + current_clear_bytes,< / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   cipher_bytes, & sample_encryption_entry.subsamples);< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   accumulated_clear_bytes = 0;< / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   < span class = "comment" > // For non-video-slice NAL units, don' t encrypt.< / span > < / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   accumulated_clear_bytes += nalu.header_size() + nalu.payload_size();< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   }< / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   }< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   < span class = "keywordflow" > if< / span > (result != NaluReader::kEOStream)< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   < span class = "keywordflow" > return< / span > Status(error::MUXER_FAILURE, < span class = "stringliteral" > " Failed to parse NAL units." < / span > );< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   AddSubsamples(accumulated_clear_bytes, 0,< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   & sample_encryption_entry.subsamples);< / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   }< / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   < / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   < span class = "comment" > // The length of per-sample auxiliary datum, defined in CENC ch. 7.< / span > < / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   traf()-> auxiliary_size.sample_info_sizes.push_back(< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   sample_encryption_entry.ComputeSize());< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   EncryptBytes(data, sample-> data_size());< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   }< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   < / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   traf()-> sample_encryption.sample_encryption_entries.push_back(< / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   sample_encryption_entry);< / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   encryptor_-> UpdateIv();< / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   }< / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   < / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < span class = "keywordtype" > bool< / span > EncryptingFragmenter::IsSubsampleEncryptionRequired() {< / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < span class = "keywordflow" > return< / span > vpx_parser_ || nalu_length_size_ != 0;< / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   }< / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   } < span class = "comment" > // namespace mp4< / span > < / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   } < span class = "comment" > // namespace edash_packager< / span > < / div >
2016-03-08 02:29:00 +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#l00069" > box_definitions.h:69< / a > < / div > < / div >
2016-01-05 01:09:46 +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#l00030" > fragmenter.h:30< / a > < / div > < / div >
2016-02-23 19:58:24 +00:00
< 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#l00169" > encrypting_fragmenter.cc:169< / a > < / div > < / div >
2016-01-05 01:09:46 +00:00
< 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#l00075" > status.h:75< / a > < / div > < / div >
2016-02-23 19:58:24 +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#l00102" > encrypting_fragmenter.cc:102< / a > < / div > < / div >
2016-01-09 01:03:21 +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#l00076" > fragmenter.cc:76< / a > < / div > < / div >
2015-10-16 00:33:37 +00:00
< 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 >
2015-12-30 22:27:23 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1VP9Parser_html" > < div class = "ttname" > < a href = "../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html" > edash_packager::media::VP9Parser< / a > < / div > < div class = "ttdoc" > Class to parse a vp9 bit stream. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../df/d8a/vp9__parser_8h_source.html#l00020" > vp9_parser.h:20< / a > < / div > < / div >
2016-02-23 19:58:24 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a35e714ce7885037ea4299f0836e0d058" > < div class = "ttname" > < a href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a35e714ce7885037ea4299f0836e0d058" > edash_packager::media::mp4::EncryptingFragmenter::EncryptingFragmenter< / a > < / div > < div class = "ttdeci" > EncryptingFragmenter(scoped_refptr< StreamInfo > info, TrackFragment *traf, scoped_ptr< EncryptionKey > encryption_key, int64_t clear_time)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00063" > encrypting_fragmenter.cc:63< / a > < / div > < / div >
2016-01-05 02:37:27 +00:00
< 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#l00089" > fragmenter.h:89< / a > < / div > < / div >
2016-02-23 19:58:24 +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#l00087" > encrypting_fragmenter.cc:87< / 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 >
2016-02-23 19:58:24 +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#l00132" > encrypting_fragmenter.cc:132< / a > < / div > < / div >
2016-03-08 02:29:00 +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#l00675" > box_definitions.h:675< / a > < / div > < / div >
2015-12-30 22:27:23 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1VP8Parser_html" > < div class = "ttname" > < a href = "../../d5/dce/classedash__packager_1_1media_1_1VP8Parser.html" > edash_packager::media::VP8Parser< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dd/d65/vp8__parser_8h_source.html#l00021" > vp8_parser.h:21< / a > < / div > < / div >
2016-02-23 19:58:24 +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#l00143" > encrypting_fragmenter.cc:143< / a > < / div > < / div >
2016-02-22 21:58:55 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1H264VideoSliceHeaderParser_html" > < div class = "ttname" > < a href = "../../d6/dc2/classedash__packager_1_1media_1_1mp4_1_1H264VideoSliceHeaderParser.html" > edash_packager::media::mp4::H264VideoSliceHeaderParser< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d2/d33/video__slice__header__parser_8h_source.html#l00036" > video_slice_header_parser.h:36< / a > < / div > < / div >
2016-02-23 19:58:24 +00:00
< 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#l00148" > encrypting_fragmenter.cc:148< / a > < / div > < / div >
2016-01-09 01:03:21 +00:00
< 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#l00093" > fragmenter.cc:93< / 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 >
2016-03-08 07:48:26 +00:00
Generated on Tue Mar 8 2016 07:48:14 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
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