2015-10-16 00:33:37 +00:00
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2015-10-16 00:33:37 +00:00
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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 >
2016-02-22 21:58:55 +00:00
< 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 >
2016-04-15 19:07:50 +00:00
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " packager/media/base/aes_pattern_cryptor.h" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include " packager/media/base/buffer_reader.h" < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " packager/media/base/key_source.h" < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "preprocessor" > #include " packager/media/base/media_sample.h" < / span > < / div >
2016-05-27 23:48:18 +00:00
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include " packager/media/codecs/nalu_reader.h" < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include " packager/media/codecs/vp8_parser.h" < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include " packager/media/codecs/vp9_parser.h" < / span > < / div >
2016-04-15 19:07:50 +00:00
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/box_definitions.h" < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < / div >
2016-05-24 23:43:16 +00:00
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "keyword" > namespace < / span > shaka {< / div >
2016-04-15 19:07:50 +00:00
< 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" > 25< / span >   < span class = "keyword" > namespace < / 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 > kCencBlockSize = 16u;< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "comment" > // Adds one or more subsamples to |*subsamples|. This may add more than one< / span > < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "comment" > // if one of the values overflows the integer in the subsample.< / span > < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "keywordtype" > void< / span > AddSubsamples(uint64_t clear_bytes,< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   uint64_t cipher_bytes,< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   std::vector< SubsampleEntry> * subsamples) {< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   CHECK_LT(cipher_bytes, std::numeric_limits< uint32_t> ::max());< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "keyword" > const< / span > uint64_t kUInt16Max = std::numeric_limits< uint16_t> ::max();< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keywordflow" > while< / span > (clear_bytes > kUInt16Max) {< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   subsamples-> push_back(SubsampleEntry(kUInt16Max, 0));< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   clear_bytes -= kUInt16Max;< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   }< / 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 >   < span class = "keywordflow" > if< / span > (clear_bytes > 0 || cipher_bytes > 0)< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   subsamples-> push_back(SubsampleEntry(clear_bytes, cipher_bytes));< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   }< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < / div >
2016-08-18 21:18:15 +00:00
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   Codec GetCodec(< span class = "keyword" > const< / span > StreamInfo& stream_info) {< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "keywordflow" > if< / span > (stream_info.stream_type() != kStreamVideo) < span class = "keywordflow" > return< / span > kUnknownCodec;< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "keyword" > const< / span > VideoStreamInfo& video_stream_info =< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / 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 = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "keywordflow" > return< / span > video_stream_info.codec();< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   }< / 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 >   uint8_t GetNaluLengthSize(< span class = "keyword" > const< / span > StreamInfo& stream_info) {< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "keywordflow" > if< / span > (stream_info.stream_type() != kStreamVideo)< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "keyword" > const< / span > VideoStreamInfo& video_stream_info =< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / 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 = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "keywordflow" > return< / span > video_stream_info.nalu_length_size();< / 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 >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < / div >
2016-08-19 00:58:26 +00:00
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > < a class = "line" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3c1c1037b7d9e6edf1f476434705c3d5" > 61< / a > < / span >   < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3c1c1037b7d9e6edf1f476434705c3d5" > EncryptingFragmenter::EncryptingFragmenter< / a > (< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   scoped_refptr< StreamInfo> info,< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < a class = "code" href = "../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html" > TrackFragment< / a > * traf,< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   std::unique_ptr< EncryptionKey> encryption_key,< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   int64_t clear_time,< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   FourCC protection_scheme,< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   uint8_t crypt_byte_block,< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   uint8_t skip_byte_block,< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < a class = "code" href = "../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html" > MuxerListener< / a > * listener)< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   : < a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html" > Fragmenter< / a > (info, traf),< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   info_(info),< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   encryption_key_(std::move(encryption_key)),< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   nalu_length_size_(GetNaluLengthSize(*info)),< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   video_codec_(GetCodec(*info)),< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   clear_time_(clear_time),< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   protection_scheme_(protection_scheme),< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   crypt_byte_block_(crypt_byte_block),< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   skip_byte_block_(skip_byte_block),< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   listener_(listener) {< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "keywordflow" > switch< / span > (video_codec_) {< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keywordflow" > case< / span > kCodecVP8:< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   vpx_parser_.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d8/d14/classshaka_1_1media_1_1VP8Parser.html" > VP8Parser< / a > );< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "keywordflow" > case< / span > kCodecVP9:< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   vpx_parser_.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../db/d5a/classshaka_1_1media_1_1VP9Parser.html" > VP9Parser< / a > );< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "keywordflow" > case< / span > kCodecH264:< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   header_parser_.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../da/df0/classshaka_1_1media_1_1H264VideoSliceHeaderParser.html" > H264VideoSliceHeaderParser< / a > );< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "keywordflow" > case< / span > kCodecHVC1:< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   FALLTHROUGH_INTENDED;< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "keywordflow" > case< / span > kCodecHEV1:< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   header_parser_.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d1/d79/classshaka_1_1media_1_1H265VideoSliceHeaderParser.html" > H265VideoSliceHeaderParser< / a > );< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keywordflow" > if< / span > (nalu_length_size_ > 0) {< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   LOG(WARNING) < < < span class = "stringliteral" > " Unknown video codec ' " < / span > < < video_codec_< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < < < span class = "stringliteral" > " ' , whole subsamples will be encrypted." < / span > ;< / 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" > 102< / span >   }< / 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 >   EncryptingFragmenter::~EncryptingFragmenter() {}< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > < a class = "line" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#afeb03755fa2e6a53376ae5ceb7440021" > 106< / a > < / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#afeb03755fa2e6a53376ae5ceb7440021" > EncryptingFragmenter::AddSample< / a > (scoped_refptr< MediaSample> sample) {< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   DCHECK(sample);< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "keywordflow" > if< / span > (!fragment_initialized()) {< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > status = < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a126294f104809268975fe04391902ad3" > InitializeFragment< / a > (sample-> dts());< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   }< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "keywordflow" > if< / span > (encryptor_) {< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > status = EncryptSample(sample);< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "keywordflow" > return< / span > status;< / 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 = "keywordflow" > return< / span > < a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a684c1f318ac05e85f4dbf373ea65b7ad" > Fragmenter::AddSample< / a > (sample);< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   }< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > < a class = "line" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a126294f104809268975fe04391902ad3" > 121< / a > < / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a126294f104809268975fe04391902ad3" > EncryptingFragmenter::InitializeFragment< / a > (int64_t first_sample_dts) {< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > status = < a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#aa702c2af5ea5096d94f2943076a21e4a" > Fragmenter::InitializeFragment< / a > (first_sample_dts);< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordflow" > return< / span > status;< / 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 >   < span class = "keywordflow" > if< / span > (header_parser_ & & !header_parser_-> Initialize(info_-> codec_config()))< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d0/d93/classshaka_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 = "l00128" > < / a > < span class = "lineno" > 128< / span >   < / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   traf()-> auxiliary_size.sample_info_sizes.clear();< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   traf()-> auxiliary_offset.offsets.clear();< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   < span class = "keywordflow" > if< / span > (IsSubsampleEncryptionRequired()) {< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   traf()-> sample_encryption.flags |=< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   SampleEncryption::kUseSubsampleEncryption;< / 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 >   traf()-> sample_encryption.sample_encryption_entries.clear();< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > enable_encryption = clear_time_ < = 0;< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "keywordflow" > if< / span > (!enable_encryption) {< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < span class = "comment" > // This fragment should be in clear text.< / span > < / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "comment" > // At most two sample description entries, an encrypted entry and a clear< / span > < / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "comment" > // entry, are generated. The 1-based clear entry index is always 2.< / span > < / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < span class = "keyword" > const< / span > uint32_t kClearSampleDescriptionIndex = 2;< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   traf()-> header.flags |=< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   TrackFragmentHeader::kSampleDescriptionIndexPresentMask;< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   traf()-> header.sample_description_index = kClearSampleDescriptionIndex;< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < span class = "keywordflow" > if< / span > (listener_)< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   listener_-> < a class = "code" href = "../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html#a897463091f0effa647a8e2822f48b2ee" > OnEncryptionStart< / a > ();< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   }< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ace1882cf57dab24ee8e38765675e69a1" > PrepareFragmentForEncryption< / a > (enable_encryption);< / 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" > < a class = "line" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0de01823838c543cb8f6f8e330712ac2" > 154< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0de01823838c543cb8f6f8e330712ac2" > EncryptingFragmenter::FinalizeFragment< / a > () {< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keywordflow" > if< / span > (encryptor_) {< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   DCHECK_LE(clear_time_, 0);< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5cfbe43af4b1617853cef5fc2243003b" > FinalizeFragmentForEncryption< / a > ();< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   DCHECK_GT(clear_time_, 0);< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   clear_time_ -= fragment_duration();< / 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 >   < a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a0295126af5e6b278a980021f43ae17ea" > Fragmenter::FinalizeFragment< / a > ();< / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   }< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > < a class = "line" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ace1882cf57dab24ee8e38765675e69a1" > 165< / a > < / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ace1882cf57dab24ee8e38765675e69a1" > EncryptingFragmenter::PrepareFragmentForEncryption< / a > (< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   < span class = "keywordtype" > bool< / span > enable_encryption) {< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "keywordflow" > return< / span > (!enable_encryption || encryptor_) ? Status::OK : < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a4220479b2dd98b462ff4dd4afcf56d0e" > CreateEncryptor< / a > ();< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   }< / div >
2016-08-18 21:18:15 +00:00
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   < / div >
2016-08-19 00:58:26 +00:00
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > < a class = "line" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5cfbe43af4b1617853cef5fc2243003b" > 170< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5cfbe43af4b1617853cef5fc2243003b" > EncryptingFragmenter::FinalizeFragmentForEncryption< / a > () {< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < span class = "comment" > // The offset will be adjusted in Segmenter after knowing moof size.< / span > < / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   traf()-> auxiliary_offset.offsets.push_back(0);< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < span class = "comment" > // For ' cbcs' scheme, Constant IVs SHALL be used.< / span > < / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < span class = "keyword" > const< / span > uint8_t per_sample_iv_size =< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   (protection_scheme_ == FOURCC_cbcs) ? 0 :< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   static_cast< uint8_t> (encryptor_-> iv().size());< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   traf()-> sample_encryption.iv_size = per_sample_iv_size;< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "comment" > // Optimize saiz box.< / span > < / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < a class = "code" href = "../../dd/d13/structshaka_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize.html" > SampleAuxiliaryInformationSize< / a > & saiz = traf()-> auxiliary_size;< / div >
2017-01-06 19:31:11 +00:00
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   saiz.sample_count =< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < span class = "keyword" > static_cast< < / span > uint32_t< span class = "keyword" > > < / span > (traf()-> runs[0].sample_sizes.size());< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < span class = "keywordflow" > if< / span > (!saiz.sample_info_sizes.empty()) {< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < span class = "keywordflow" > if< / span > (!< a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4" > OptimizeSampleEntries< / a > (& saiz.sample_info_sizes,< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   & saiz.default_sample_info_size)) {< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   saiz.default_sample_info_size = 0;< / 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 >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   < span class = "comment" > // |sample_info_sizes| table is filled in only for subsample encryption,< / span > < / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < span class = "comment" > // otherwise |sample_info_size| is just the IV size.< / span > < / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   DCHECK(!IsSubsampleEncryptionRequired());< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   saiz.default_sample_info_size = < span class = "keyword" > static_cast< < / span > uint8_t< span class = "keyword" > > < / span > (per_sample_iv_size);< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   }< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "comment" > // It should only happen with full sample encryption + constant iv, i.e.< / span > < / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "comment" > // ' cbcs' applying to audio.< / span > < / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < span class = "keywordflow" > if< / span > (saiz.default_sample_info_size == 0 & & saiz.sample_info_sizes.empty()) {< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   DCHECK_EQ(protection_scheme_, FOURCC_cbcs);< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   DCHECK(!IsSubsampleEncryptionRequired());< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   < span class = "comment" > // ISO/IEC 23001-7:2016(E) The sample auxiliary information would then be< / span > < / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < span class = "comment" > // empty and should be emitted. Clear saiz and saio boxes so they are not< / span > < / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "comment" > // written.< / span > < / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   saiz.sample_count = 0;< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   traf()-> auxiliary_offset.offsets.clear();< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   }< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   }< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   < / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > < a class = "line" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a4220479b2dd98b462ff4dd4afcf56d0e" > 209< / a > < / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a4220479b2dd98b462ff4dd4afcf56d0e" > EncryptingFragmenter::CreateEncryptor< / a > () {< / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   std::unique_ptr< AesCryptor> encryptor;< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   < span class = "keywordflow" > switch< / span > (protection_scheme_) {< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   < span class = "keywordflow" > case< / span > FOURCC_cenc:< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   encryptor.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d0/dd8/classshaka_1_1media_1_1AesCtrEncryptor.html" > AesCtrEncryptor< / a > );< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < span class = "keywordflow" > case< / span > FOURCC_cbc1:< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   encryptor.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d4/d20/classshaka_1_1media_1_1AesCbcEncryptor.html" > AesCbcEncryptor< / a > (kNoPadding));< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   < span class = "keywordflow" > case< / span > FOURCC_cens:< / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   encryptor.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html" > AesPatternCryptor< / a > (< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   crypt_byte_block(), skip_byte_block(),< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   < a class = "code" href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html#a54fd35d7782d3b4948c7eb68387711f0a76b19d202e22b2b0f661f933b47b3b16" > AesPatternCryptor::kEncryptIfCryptByteBlockRemaining< / a > ,< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   AesCryptor::kDontUseConstantIv,< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   std::unique_ptr< AesCryptor> (< span class = "keyword" > new< / span > < a class = "code" href = "../../d0/dd8/classshaka_1_1media_1_1AesCtrEncryptor.html" > AesCtrEncryptor< / a > ())));< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   < span class = "keywordflow" > case< / span > FOURCC_cbcs:< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   encryptor.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html" > AesPatternCryptor< / a > (< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   crypt_byte_block(), skip_byte_block(),< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   < a class = "code" href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html#a54fd35d7782d3b4948c7eb68387711f0a76b19d202e22b2b0f661f933b47b3b16" > AesPatternCryptor::kEncryptIfCryptByteBlockRemaining< / a > ,< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   AesCryptor::kUseConstantIv,< / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   std::unique_ptr< AesCryptor> (< span class = "keyword" > new< / span > < a class = "code" href = "../../d4/d20/classshaka_1_1media_1_1AesCbcEncryptor.html" > AesCbcEncryptor< / a > (kNoPadding))));< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > (error::MUXER_FAILURE, < span class = "stringliteral" > " Unsupported protection scheme." < / span > );< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   }< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   DCHECK(!encryption_key_-> iv.empty());< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > initialized =< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   encryptor-> InitializeWithIv(encryption_key_-> key, encryption_key_-> iv);< / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < span class = "keywordflow" > if< / span > (!initialized)< / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d0/d93/classshaka_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 = "l00242" > < / a > < span class = "lineno" > 242< / span >   encryptor_ = std::move(encryptor);< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   }< / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   < span class = "keywordtype" > void< / span > EncryptingFragmenter::EncryptBytes(uint8_t* data, < span class = "keywordtype" > size_t< / span > size) {< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   DCHECK(encryptor_);< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   CHECK(encryptor_-> Crypt(data, size, data));< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   }< / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   < / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > EncryptingFragmenter::EncryptSample(scoped_refptr< MediaSample> sample) {< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   DCHECK(encryptor_);< / 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 >   SampleEncryptionEntry sample_encryption_entry;< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   < span class = "comment" > // For ' cbcs' scheme, Constant IVs SHALL be used.< / span > < / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   < span class = "keywordflow" > if< / span > (protection_scheme_ != FOURCC_cbcs)< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   sample_encryption_entry.initialization_vector = encryptor_-> iv();< / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   uint8_t* data = sample-> writable_data();< / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   < span class = "keywordflow" > if< / span > (IsSubsampleEncryptionRequired()) {< / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   < span class = "keywordflow" > if< / span > (vpx_parser_) {< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   std::vector< VPxFrameInfo> vpx_frames;< / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < span class = "keywordflow" > if< / span > (!vpx_parser_-> Parse(sample-> data(), sample-> data_size(),< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   & vpx_frames)) {< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d0/d93/classshaka_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 = "l00265" > < / a > < span class = "lineno" > 265< / span >   }< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   < / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > is_superframe = vpx_frames.size() > 1;< / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > VPxFrameInfo& frame : vpx_frames) {< / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   SubsampleEntry subsample;< / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   subsample.clear_bytes =< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   < span class = "keyword" > static_cast< < / span > uint16_t< span class = "keyword" > > < / span > (frame.uncompressed_header_size);< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   subsample.cipher_bytes = < span class = "keyword" > static_cast< < / span > uint32_t< span class = "keyword" > > < / span > (< / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   frame.frame_size - frame.uncompressed_header_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 >   < span class = "comment" > // " VP Codec ISO Media File Format Binding" document requires that the< / span > < / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < span class = "comment" > // encrypted bytes of each frame within the superframe must be block< / span > < / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   < span class = "comment" > // aligned so that the counter state can be computed for each frame< / span > < / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < span class = "comment" > // within the superframe.< / span > < / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < span class = "comment" > // ISO/IEC 23001-7:2016 10.2 ' cbc1' 10.3 ' cens' < / span > < / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < span class = "comment" > // The BytesOfProtectedData size SHALL be a multiple of 16 bytes to< / span > < / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   < span class = "comment" > // avoid partial blocks in Subsamples.< / span > < / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < span class = "keywordflow" > if< / span > (is_superframe || protection_scheme_ == FOURCC_cbc1 ||< / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   protection_scheme_ == FOURCC_cens) {< / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "keyword" > const< / span > uint16_t misalign_bytes =< / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   subsample.cipher_bytes % kCencBlockSize;< / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   subsample.clear_bytes += misalign_bytes;< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   subsample.cipher_bytes -= misalign_bytes;< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   }< / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   < / div >
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   sample_encryption_entry.subsamples.push_back(subsample);< / div >
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   < span class = "keywordflow" > if< / span > (subsample.cipher_bytes > 0)< / div >
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   EncryptBytes(data + subsample.clear_bytes, subsample.cipher_bytes);< / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   data += frame.frame_size;< / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   }< / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   < span class = "comment" > // Add subsample for the superframe index if exists.< / span > < / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < span class = "keywordflow" > if< / span > (is_superframe) {< / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   < span class = "keywordtype" > size_t< / span > index_size = sample-> data() + sample-> data_size() - data;< / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   DCHECK_LE(index_size, 2 + vpx_frames.size() * 4);< / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   DCHECK_GE(index_size, 2 + vpx_frames.size() * 1);< / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   SubsampleEntry subsample;< / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   subsample.clear_bytes = < span class = "keyword" > static_cast< < / span > uint16_t< span class = "keyword" > > < / span > (index_size);< / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   subsample.cipher_bytes = 0;< / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   sample_encryption_entry.subsamples.push_back(subsample);< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   }< / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   < span class = "keyword" > const< / span > Nalu::CodecType nalu_type =< / div >
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   (video_codec_ == kCodecHVC1 || video_codec_ == kCodecHEV1)< / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   ? Nalu::kH265< / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   : Nalu::kH264;< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   NaluReader reader(nalu_type, nalu_length_size_, data,< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   sample-> data_size());< / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   < / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   < span class = "comment" > // Store the current length of clear data. This is used to squash< / span > < / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   < span class = "comment" > // multiple unencrypted NAL units into fewer subsample entries.< / span > < / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   uint64_t accumulated_clear_bytes = 0;< / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   < / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   Nalu nalu;< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   NaluReader::Result result;< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   < span class = "keywordflow" > while< / span > ((result = reader.Advance(& nalu)) == NaluReader::kOk) {< / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   < span class = "keywordflow" > if< / span > (nalu.is_video_slice()) {< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   < span class = "comment" > // For video-slice NAL units, encrypt the video slice. This skips< / span > < / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   < span class = "comment" > // the frame header. If this is an unrecognized codec (e.g. H.265),< / span > < / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   < span class = "comment" > // the whole NAL unit will be encrypted.< / span > < / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   < span class = "keyword" > const< / span > int64_t video_slice_header_size =< / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   header_parser_ ? header_parser_-> GetHeaderSize(nalu) : 0;< / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   < span class = "keywordflow" > if< / span > (video_slice_header_size < 0)< / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / 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 = "l00328" > < / a > < span class = "lineno" > 328< / span >   < / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   uint64_t current_clear_bytes =< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   nalu.header_size() + video_slice_header_size;< / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   uint64_t cipher_bytes = nalu.payload_size() - video_slice_header_size;< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   < / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   < span class = "comment" > // ISO/IEC 23001-7:2016 10.2 ' cbc1' 10.3 ' cens' < / span > < / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   < span class = "comment" > // The BytesOfProtectedData size SHALL be a multiple of 16 bytes to< / span > < / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   < span class = "comment" > // avoid partial blocks in Subsamples.< / span > < / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   < span class = "keywordflow" > if< / span > (protection_scheme_ == FOURCC_cbc1 ||< / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   protection_scheme_ == FOURCC_cens) {< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   < span class = "keyword" > const< / span > uint16_t misalign_bytes = cipher_bytes % kCencBlockSize;< / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   current_clear_bytes += misalign_bytes;< / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   cipher_bytes -= misalign_bytes;< / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   }< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   < / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   < span class = "keyword" > const< / span > uint8_t* nalu_data = nalu.data() + current_clear_bytes;< / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   EncryptBytes(const_cast< uint8_t*> (nalu_data), cipher_bytes);< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   < / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   AddSubsamples(< / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   accumulated_clear_bytes + nalu_length_size_ + current_clear_bytes,< / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   cipher_bytes, & sample_encryption_entry.subsamples);< / div >
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   accumulated_clear_bytes = 0;< / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   < span class = "comment" > // For non-video-slice NAL units, don' t encrypt.< / span > < / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   accumulated_clear_bytes +=< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   nalu_length_size_ + nalu.header_size() + nalu.payload_size();< / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   }< / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   }< / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   < span class = "keywordflow" > if< / span > (result != NaluReader::kEOStream)< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / 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 = "l00358" > < / a > < span class = "lineno" > 358< / span >   AddSubsamples(accumulated_clear_bytes, 0,< / div >
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   & sample_encryption_entry.subsamples);< / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   }< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   DCHECK_EQ(sample_encryption_entry.GetTotalSizeOfSubsamples(),< / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   sample-> data_size());< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   < / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   < span class = "comment" > // The length of per-sample auxiliary datum, defined in CENC ch. 7.< / span > < / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   traf()-> auxiliary_size.sample_info_sizes.push_back(< / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   sample_encryption_entry.ComputeSize());< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   DCHECK_LE(crypt_byte_block(), 1u);< / div >
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   DCHECK_EQ(skip_byte_block(), 0u);< / div >
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   EncryptBytes(data, sample-> data_size());< / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > 371< / span >   }< / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   < / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   traf()-> sample_encryption.sample_encryption_entries.push_back(< / div >
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   sample_encryption_entry);< / div >
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   encryptor_-> UpdateIv();< / div >
< div class = "line" > < a name = "l00376" > < / a > < span class = "lineno" > 376< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00377" > < / a > < span class = "lineno" > 377< / span >   }< / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   < / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   < span class = "keywordtype" > bool< / span > EncryptingFragmenter::IsSubsampleEncryptionRequired() {< / div >
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   < span class = "keywordflow" > return< / span > vpx_parser_ || nalu_length_size_ != 0;< / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   }< / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   < / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   } < span class = "comment" > // namespace mp4< / span > < / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
2016-05-27 23:48:18 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1H265VideoSliceHeaderParser_html" > < div class = "ttname" > < a href = "../../d1/d79/classshaka_1_1media_1_1H265VideoSliceHeaderParser.html" > shaka::media::H265VideoSliceHeaderParser< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d2/d33/video__slice__header__parser_8h_source.html#l00053" > video_slice_header_parser.h:53< / a > < / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_afeb03755fa2e6a53376ae5ceb7440021" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#afeb03755fa2e6a53376ae5ceb7440021" > shaka::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#l00106" > encrypting_fragmenter.cc:106< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a126294f104809268975fe04391902ad3" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a126294f104809268975fe04391902ad3" > shaka::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#l00121" > encrypting_fragmenter.cc:121< / a > < / div > < / div >
2016-05-26 00:03:16 +00:00
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1TrackFragment_html" > < div class = "ttname" > < a href = "../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html" > shaka::media::mp4::TrackFragment< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00728" > box_definitions.h:728< / a > < / div > < / div >
2016-08-19 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1Fragmenter_html_a684c1f318ac05e85f4dbf373ea65b7ad" > < div class = "ttname" > < a href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a684c1f318ac05e85f4dbf373ea65b7ad" > shaka::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#l00046" > fragmenter.cc:46< / a > < / div > < / div >
2016-07-11 20:48:08 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1MuxerListener_html_a897463091f0effa647a8e2822f48b2ee" > < div class = "ttname" > < a href = "../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html#a897463091f0effa647a8e2822f48b2ee" > shaka::media::MuxerListener::OnEncryptionStart< / a > < / div > < div class = "ttdeci" > virtual void OnEncryptionStart()=0< / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a0de01823838c543cb8f6f8e330712ac2" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0de01823838c543cb8f6f8e330712ac2" > shaka::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#l00154" > encrypting_fragmenter.cc:154< / a > < / div > < / div >
2017-01-06 19:31:11 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1Fragmenter_html_aa702c2af5ea5096d94f2943076a21e4a" > < div class = "ttname" > < a href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#aa702c2af5ea5096d94f2943076a21e4a" > shaka::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#l00092" > fragmenter.cc:92< / a > < / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1AesPatternCryptor_html_a54fd35d7782d3b4948c7eb68387711f0a76b19d202e22b2b0f661f933b47b3b16" > < div class = "ttname" > < a href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html#a54fd35d7782d3b4948c7eb68387711f0a76b19d202e22b2b0f661f933b47b3b16" > shaka::media::AesPatternCryptor::kEncryptIfCryptByteBlockRemaining< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d09/aes__pattern__cryptor_8h_source.html#l00026" > aes_pattern_cryptor.h:26< / a > < / div > < / div >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1VP8Parser_html" > < div class = "ttname" > < a href = "../../d8/d14/classshaka_1_1media_1_1VP8Parser.html" > shaka::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 >
2017-01-06 19:31:11 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1Fragmenter_html_a0295126af5e6b278a980021f43ae17ea" > < div class = "ttname" > < a href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a0295126af5e6b278a980021f43ae17ea" > shaka::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#l00111" > fragmenter.cc:111< / a > < / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1AesCbcEncryptor_html" > < div class = "ttname" > < a href = "../../d4/d20/classshaka_1_1media_1_1AesCbcEncryptor.html" > shaka::media::AesCbcEncryptor< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/df0/aes__encryptor_8h_source.html#l00077" > aes_encryptor.h:77< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a5cfbe43af4b1617853cef5fc2243003b" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5cfbe43af4b1617853cef5fc2243003b" > shaka::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#l00170" > encrypting_fragmenter.cc:170< / a > < / div > < / div >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1Fragmenter_html" > < div class = "ttname" > < a href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html" > shaka::media::mp4::Fragmenter< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../da/dd1/fragmenter_8h_source.html#l00031" > fragmenter.h:31< / a > < / div > < / div >
2016-05-27 23:48:18 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1H264VideoSliceHeaderParser_html" > < div class = "ttname" > < a href = "../../da/df0/classshaka_1_1media_1_1H264VideoSliceHeaderParser.html" > shaka::media::H264VideoSliceHeaderParser< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d2/d33/video__slice__header__parser_8h_source.html#l00036" > video_slice_header_parser.h:36< / a > < / div > < / div >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1VP9Parser_html" > < div class = "ttname" > < a href = "../../db/d5a/classshaka_1_1media_1_1VP9Parser.html" > shaka::media::VP9Parser< / a > < / div > < div class = "ttdoc" > Class to parse a vp9 bit stream. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../df/d8a/vp9__parser_8h_source.html#l00020" > vp9_parser.h:20< / a > < / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1AesPatternCryptor_html" > < div class = "ttname" > < a href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html" > shaka::media::AesPatternCryptor< / a > < / div > < div class = "ttdoc" > Implements pattern-based encryption/decryption. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d09/aes__pattern__cryptor_8h_source.html#l00017" > aes_pattern_cryptor.h:17< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1AesCtrEncryptor_html" > < div class = "ttname" > < a href = "../../d0/dd8/classshaka_1_1media_1_1AesCtrEncryptor.html" > shaka::media::AesCtrEncryptor< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/df0/aes__encryptor_8h_source.html#l00042" > aes_encryptor.h:42< / a > < / div > < / div >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1Status_html" > < div class = "ttname" > < a href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > shaka::media::Status< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d13/status_8h_source.html#l00075" > status.h:75< / a > < / div > < / div >
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize_html" > < div class = "ttname" > < a href = "../../dd/d13/structshaka_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize.html" > shaka::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 >
2017-01-06 19:31:11 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a4220479b2dd98b462ff4dd4afcf56d0e" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a4220479b2dd98b462ff4dd4afcf56d0e" > shaka::media::mp4::EncryptingFragmenter::CreateEncryptor< / a > < / div > < div class = "ttdeci" > Status CreateEncryptor()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00209" > encrypting_fragmenter.cc:209< / a > < / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_ace1882cf57dab24ee8e38765675e69a1" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ace1882cf57dab24ee8e38765675e69a1" > shaka::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#l00165" > encrypting_fragmenter.cc:165< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a3c1c1037b7d9e6edf1f476434705c3d5" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3c1c1037b7d9e6edf1f476434705c3d5" > shaka::media::mp4::EncryptingFragmenter::EncryptingFragmenter< / a > < / div > < div class = "ttdeci" > EncryptingFragmenter(scoped_refptr< StreamInfo > info, TrackFragment *traf, std::unique_ptr< EncryptionKey > encryption_key, int64_t clear_time, FourCC protection_scheme, uint8_t crypt_byte_block, uint8_t skip_byte_block, MuxerListener *listener)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00061" > encrypting_fragmenter.cc:61< / a > < / div > < / div >
2016-07-11 20:48:08 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1MuxerListener_html" > < div class = "ttname" > < a href = "../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html" > shaka::media::MuxerListener< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../de/dfa/muxer__listener_8h_source.html#l00030" > muxer_listener.h:30< / a > < / div > < / div >
2016-08-19 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1Fragmenter_html_a208b7b8dd83e73c4206469695a3216d4" > < div class = "ttname" > < a href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4" > shaka::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#l00101" > fragmenter.h:101< / a > < / div > < / div >
2015-10-16 00:33:37 +00:00
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2017-01-10 01:58:45 +00:00
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2015-10-16 00:33:37 +00:00
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