2015-10-16 00:33:37 +00:00
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2016-05-11 18:03:07 +00:00
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2015-10-16 00:33:37 +00:00
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< ul >
< li class = "navelem" > < a class = "el" href = "../../dir_39dc0668bd5a501998f94e8b4e546c71.html" > media< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_65f7acfa8cf3a5f1edc11faa2428b914.html" > formats< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_3e9291fd7a18fdecc763294cb2628910.html" > mp4< / a > < / li > < / ul >
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< div class = "title" > fragmenter.cc< / div > < / div >
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< div class = "contents" >
< div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright 2014 Google Inc. All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > // Use of this source code is governed by a BSD-style< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > // license that can be found in the LICENSE file or at< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > // https://developers.google.com/open-source/licenses/bsd< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/fragmenter.h" < / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "preprocessor" > #include < 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/buffer_writer.h" < / span > < / div >
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< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " packager/media/base/audio_stream_info.h" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include " packager/media/base/media_sample.h" < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/box_definitions.h" < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < / div >
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< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "keyword" > namespace < / span > shaka {< / div >
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< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "keyword" > namespace < / span > mp4 {< / 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 > {< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "keyword" > const< / span > int64_t kInvalidTime = std::numeric_limits< int64_t> ::max();< / div >
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< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < / div >
2016-05-17 00:15:28 +00:00
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   uint64_t GetSeekPreroll(< span class = "keyword" > const< / span > StreamInfo& stream_info) {< / div >
2016-07-19 18:58:22 +00:00
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "keywordflow" > if< / span > (stream_info.stream_type() != kStreamAudio)< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "keyword" > const< / span > AudioStreamInfo& audio_stream_info =< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "keyword" > static_cast< < / span > < span class = "keyword" > const < / span > AudioStreamInfo& < span class = "keyword" > > < / span > (stream_info);< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "keywordflow" > return< / span > audio_stream_info.seek_preroll_ns();< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   }< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < / div >
2017-01-26 03:38:47 +00:00
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a1be96f51fc8ea765aab7142df1bf6006" > 32< / a > < / span >   < a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a1be96f51fc8ea765aab7142df1bf6006" > Fragmenter::Fragmenter< / a > (std::shared_ptr< StreamInfo> info, < a class = "code" href = "../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html" > TrackFragment< / a > * traf)< / div >
2016-07-19 18:58:22 +00:00
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   : use_decoding_timestamp_in_timeline_(false),< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   traf_(traf),< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   seek_preroll_(GetSeekPreroll(*info)),< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   fragment_initialized_(false),< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   fragment_finalized_(false),< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   fragment_duration_(0),< / div >
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< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   earliest_presentation_time_(kInvalidTime),< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   first_sap_time_(kInvalidTime) {< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   DCHECK(traf);< / 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 >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   Fragmenter::~Fragmenter() {}< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < / div >
2017-01-26 03:38:47 +00:00
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a9453ee5952fc923eae502467e50317e2" > 46< / a > < / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a9453ee5952fc923eae502467e50317e2" > Fragmenter::AddSample< / a > (std::shared_ptr< MediaSample> sample) {< / div >
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< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   DCHECK(sample);< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "keywordflow" > if< / span > (sample-> duration() == 0) {< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   LOG(WARNING) < < < span class = "stringliteral" > " Unexpected sample with zero duration @ dts " < / span > < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < < sample-> dts();< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   }< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "keywordflow" > if< / span > (!fragment_initialized_) {< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / 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" > InitializeFragment< / a > (sample-> dts());< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   }< / 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 = "keywordflow" > if< / span > (sample-> side_data_size() > 0)< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   LOG(WARNING) < < < span class = "stringliteral" > " MP4 samples do not support side data. Side data ignored." < / span > ;< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < span class = "comment" > // Fill in sample parameters. It will be optimized later.< / span > < / div >
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< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   traf_-> runs[0].sample_sizes.push_back(< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   static_cast< uint32_t> (sample-> data_size()));< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   traf_-> runs[0].sample_durations.push_back(sample-> duration());< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   traf_-> runs[0].sample_flags.push_back(< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   sample-> is_key_frame() ? 0 : TrackFragmentHeader::kNonKeySampleMask);< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   data_-> AppendArray(sample-> data(), sample-> data_size());< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   fragment_duration_ += sample-> duration();< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "keyword" > const< / span > int64_t pts = sample-> pts();< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "keyword" > const< / span > int64_t dts = sample-> dts();< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "keyword" > const< / span > int64_t timestamp = use_decoding_timestamp_in_timeline_ ? dts : pts;< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   < span class = "comment" > // Set |earliest_presentation_time_| to |timestamp| if |timestamp| is smaller< / span > < / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   < span class = "comment" > // or if it is not yet initialized (kInvalidTime > timestamp is always true).< / span > < / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < span class = "keywordflow" > if< / span > (earliest_presentation_time_ > timestamp)< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   earliest_presentation_time_ = timestamp;< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   traf_-> runs[0].sample_composition_time_offsets.push_back(pts - dts);< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keywordflow" > if< / span > (pts != dts)< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   traf_-> runs[0].flags |= TrackFragmentRun::kSampleCompTimeOffsetsPresentMask;< / 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 >   < span class = "keywordflow" > if< / span > (sample-> is_key_frame()) {< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "keywordflow" > if< / span > (first_sap_time_ == kInvalidTime)< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   first_sap_time_ = pts;< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   }< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   }< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#aa702c2af5ea5096d94f2943076a21e4a" > 92< / a > < / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#aa702c2af5ea5096d94f2943076a21e4a" > Fragmenter::InitializeFragment< / a > (int64_t first_sample_dts) {< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   fragment_initialized_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   fragment_finalized_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   traf_-> decode_time.decode_time = first_sample_dts;< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   traf_-> runs.clear();< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   traf_-> runs.resize(1);< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   traf_-> runs[0].flags = TrackFragmentRun::kDataOffsetPresentMask;< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   traf_-> sample_group_descriptions.clear();< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   traf_-> sample_to_groups.clear();< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   traf_-> header.sample_description_index = 1; < span class = "comment" > // 1-based.< / span > < / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   traf_-> header.flags = TrackFragmentHeader::kDefaultBaseIsMoofMask |< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   TrackFragmentHeader::kSampleDescriptionIndexPresentMask;< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   fragment_duration_ = 0;< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   earliest_presentation_time_ = kInvalidTime;< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   first_sap_time_ = kInvalidTime;< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   data_.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../dc/d41/classshaka_1_1media_1_1BufferWriter.html" > BufferWriter< / a > ());< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   }< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a0295126af5e6b278a980021f43ae17ea" > 111< / a > < / span >   < span class = "keywordtype" > void< / 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 = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "comment" > // Optimize trun box.< / span > < / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   traf_-> runs[0].sample_count =< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / 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 = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4" > OptimizeSampleEntries< / a > (& traf_-> runs[0].sample_durations,< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   & traf_-> header.default_sample_duration)) {< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   traf_-> header.flags |=< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   TrackFragmentHeader::kDefaultSampleDurationPresentMask;< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   traf_-> runs[0].flags |= TrackFragmentRun::kSampleDurationPresentMask;< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   }< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4" > OptimizeSampleEntries< / a > (& traf_-> runs[0].sample_sizes,< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   & traf_-> header.default_sample_size)) {< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   traf_-> header.flags |= TrackFragmentHeader::kDefaultSampleSizePresentMask;< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   traf_-> runs[0].flags |= TrackFragmentRun::kSampleSizePresentMask;< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   }< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4" > OptimizeSampleEntries< / a > (& traf_-> runs[0].sample_flags,< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   & traf_-> header.default_sample_flags)) {< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   traf_-> header.flags |= TrackFragmentHeader::kDefaultSampleFlagsPresentMask;< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   traf_-> runs[0].flags |= TrackFragmentRun::kSampleFlagsPresentMask;< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   }< / 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 >   < span class = "comment" > // Add SampleToGroup boxes. A SampleToGroup box with grouping type of ' roll' < / span > < / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "comment" > // needs to be added if there is seek preroll, referencing sample group< / span > < / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "comment" > // description in track level; Also need to add SampleToGroup boxes< / span > < / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "comment" > // correponding to every SampleGroupDescription boxes, referencing sample< / span > < / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < span class = "comment" > // group description in fragment level.< / span > < / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   DCHECK_EQ(traf_-> sample_to_groups.size(), 0u);< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keywordflow" > if< / span > (seek_preroll_ > 0) {< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   traf_-> sample_to_groups.resize(traf_-> sample_to_groups.size() + 1);< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < a class = "code" href = "../../d0/d7c/structshaka_1_1media_1_1mp4_1_1SampleToGroup.html" > SampleToGroup< / a > & sample_to_group = traf_-> sample_to_groups.back();< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   sample_to_group.grouping_type = FOURCC_roll;< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   sample_to_group.entries.resize(1);< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < a class = "code" href = "../../d7/de0/structshaka_1_1media_1_1mp4_1_1SampleToGroupEntry.html" > SampleToGroupEntry< / a > & sample_to_group_entry = sample_to_group.entries.back();< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   sample_to_group_entry.sample_count = traf_-> runs[0].sample_count;< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   sample_to_group_entry.group_description_index =< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   SampleToGroupEntry::kTrackGroupDescriptionIndexBase + 1;< / 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 = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > auto< / span > & sample_group_description :< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   traf_-> sample_group_descriptions) {< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   traf_-> sample_to_groups.resize(traf_-> sample_to_groups.size() + 1);< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < a class = "code" href = "../../d0/d7c/structshaka_1_1media_1_1mp4_1_1SampleToGroup.html" > SampleToGroup< / a > & sample_to_group = traf_-> sample_to_groups.back();< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   sample_to_group.grouping_type = sample_group_description.grouping_type;< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   sample_to_group.entries.resize(1);< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < a class = "code" href = "../../d7/de0/structshaka_1_1media_1_1mp4_1_1SampleToGroupEntry.html" > SampleToGroupEntry< / a > & sample_to_group_entry = sample_to_group.entries.back();< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   sample_to_group_entry.sample_count = traf_-> runs[0].sample_count;< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   sample_to_group_entry.group_description_index =< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   SampleToGroupEntry::kTrackFragmentGroupDescriptionIndexBase + 1;< / 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" > 165< / span >   fragment_finalized_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   fragment_initialized_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   }< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#af1f1d56215c1e9543bfb516136862fa6" > 169< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#af1f1d56215c1e9543bfb516136862fa6" > Fragmenter::GenerateSegmentReference< / a > (< a class = "code" href = "../../dd/d9b/structshaka_1_1media_1_1mp4_1_1SegmentReference.html" > SegmentReference< / a > * reference) {< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < span class = "comment" > // NOTE: Daisy chain is not supported currently.< / span > < / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   reference-> reference_type = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   reference-> subsegment_duration = fragment_duration_;< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   reference-> starts_with_sap = StartsWithSAP();< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < span class = "keywordflow" > if< / span > (kInvalidTime == first_sap_time_) {< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   reference-> sap_type = SegmentReference::TypeUnknown;< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   reference-> sap_delta_time = 0;< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   reference-> sap_type = SegmentReference::Type1;< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   reference-> sap_delta_time = first_sap_time_ - earliest_presentation_time_;< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   }< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   reference-> earliest_presentation_time = earliest_presentation_time_;< / 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" > bool< / span > Fragmenter::StartsWithSAP() {< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   DCHECK(!traf_-> runs.empty());< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   uint32_t start_sample_flag;< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keywordflow" > if< / span > (traf_-> runs[0].flags & TrackFragmentRun::kSampleFlagsPresentMask) {< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   DCHECK(!traf_-> runs[0].sample_flags.empty());< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   start_sample_flag = traf_-> runs[0].sample_flags[0];< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   DCHECK(traf_-> header.flags & < / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   TrackFragmentHeader::kDefaultSampleFlagsPresentMask);< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   start_sample_flag = traf_-> header.default_sample_flags;< / 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 >   < span class = "keywordflow" > return< / span > (start_sample_flag & TrackFragmentHeader::kNonKeySampleMask) == 0;< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   }< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   } < span class = "comment" > // namespace mp4< / span > < / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
2016-05-26 00:03:16 +00:00
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1SampleToGroupEntry_html" > < div class = "ttname" > < a href = "../../d7/de0/structshaka_1_1media_1_1mp4_1_1SampleToGroupEntry.html" > shaka::media::mp4::SampleToGroupEntry< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00522" > box_definitions.h:522< / a > < / div > < / div >
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1SegmentReference_html" > < div class = "ttname" > < a href = "../../dd/d9b/structshaka_1_1media_1_1mp4_1_1SegmentReference.html" > shaka::media::mp4::SegmentReference< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00750" > box_definitions.h:750< / a > < / div > < / div >
< 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 >
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 >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1BufferWriter_html" > < div class = "ttname" > < a href = "../../dc/d41/classshaka_1_1media_1_1BufferWriter.html" > shaka::media::BufferWriter< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dd/dd2/buffer__writer_8h_source.html#l00022" > buffer_writer.h:22< / a > < / div > < / div >
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 >
2017-01-26 03:38:47 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1Fragmenter_html_a1be96f51fc8ea765aab7142df1bf6006" > < div class = "ttname" > < a href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a1be96f51fc8ea765aab7142df1bf6006" > shaka::media::mp4::Fragmenter::Fragmenter< / a > < / div > < div class = "ttdeci" > Fragmenter(std::shared_ptr< StreamInfo > info, TrackFragment *traf)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d9a/fragmenter_8cc_source.html#l00032" > fragmenter.cc:32< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1Fragmenter_html_a9453ee5952fc923eae502467e50317e2" > < div class = "ttname" > < a href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a9453ee5952fc923eae502467e50317e2" > shaka::media::mp4::Fragmenter::AddSample< / a > < / div > < div class = "ttdeci" > virtual Status AddSample(std::shared_ptr< MediaSample > sample)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d9a/fragmenter_8cc_source.html#l00046" > fragmenter.cc:46< / a > < / div > < / div >
2017-01-06 19:31:11 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1Fragmenter_html_af1f1d56215c1e9543bfb516136862fa6" > < div class = "ttname" > < a href = "../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#af1f1d56215c1e9543bfb516136862fa6" > shaka::media::mp4::Fragmenter::GenerateSegmentReference< / a > < / div > < div class = "ttdeci" > void GenerateSegmentReference(SegmentReference *reference)< / div > < div class = "ttdoc" > Fill reference with current fragment information. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d9a/fragmenter_8cc_source.html#l00169" > fragmenter.cc:169< / a > < / div > < / div >
2017-02-11 02:48:58 +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#l00085" > status.h:85< / a > < / div > < / div >
2016-05-26 00:03:16 +00:00
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1SampleToGroup_html" > < div class = "ttname" > < a href = "../../d0/d7c/structshaka_1_1media_1_1mp4_1_1SampleToGroup.html" > shaka::media::mp4::SampleToGroup< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00532" > box_definitions.h:532< / a > < / div > < / div >
2017-03-16 20:58:57 +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#l00102" > fragmenter.h:102< / a > < / div > < / div >
2015-10-16 00:33:37 +00:00
< / div > <!-- fragment --> < / div > <!-- contents -->
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2017-03-22 17:04:09 +00:00
Generated on Wed Mar 22 2017 17:04:02 for DASH Media Packaging SDK by   < a href = "http://www.doxygen.org/index.html" >
2015-10-16 00:33:37 +00:00
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