2017-03-27 19:39:08 +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_ebd49ab0652c2e9158bbb57c55382729.html" > trick_play< / a > < / li > < / ul >
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< div class = "title" > trick_play_handler.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 2017 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/trick_play/trick_play_handler.h" < / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "preprocessor" > #include " packager/base/logging.h" < / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " packager/media/base/video_stream_info.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "keyword" > namespace < / span > shaka {< / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < / div >
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< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > kMainStreamIndex = 0;< / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   }< / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   TrickPlayHandler::TrickPlayHandler() {}< / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   TrickPlayHandler::~TrickPlayHandler() {}< / div >
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< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < / div >
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< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "keywordtype" > void< / span > TrickPlayHandler::SetHandlerForMainStream(< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   std::shared_ptr< MediaHandler> handler) {< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d" > SetHandler< / a > (kMainStreamIndex, std::move(handler));< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   }< / 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 = "keywordtype" > void< / span > TrickPlayHandler::SetHandlerForTrickPlay(< / div >
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< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   uint32_t trick_play_factor,< / div >
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< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   std::shared_ptr< MediaHandler> handler) {< / div >
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< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   trick_play_factors_.push_back(trick_play_factor);< / div >
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< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "comment" > // Trick play streams start from index 1.< / span > < / div >
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< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d" > SetHandler< / a > (trick_play_factors_.size(), std::move(handler));< / div >
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< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   }< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < / div >
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< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a3fd2fae199e0a9607e83e02724896c10" > 36< / a > < / span >   Status < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a3fd2fae199e0a9607e83e02724896c10" > TrickPlayHandler::InitializeInternal< / a > () {< / div >
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< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "keywordflow" > if< / span > (!HasMainStream()) {< / div >
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< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "keywordflow" > return< / span > Status(error::TRICK_PLAY_ERROR,< / div >
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< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "stringliteral" > " Trick play does not have main stream" < / span > );< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   }< / div >
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< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < span class = "keywordflow" > if< / span > (trick_play_factors_.empty()) {< / div >
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< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "keywordflow" > return< / span > Status(error::TRICK_PLAY_ERROR,< / div >
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< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "stringliteral" > " Trick play factors are not specified." < / span > );< / div >
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< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   }< / div >
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< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "keywordtype" > size_t< / span > num_trick_play_factors = trick_play_factors_.size();< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   cached_stream_data_.resize(num_trick_play_factors);< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   playback_rates_.resize(num_trick_play_factors, 0);< / div >
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< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / 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 >   < / div >
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< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#afdd13bb4e762c4b904ed75b268359757" > 52< / a > < / span >   Status < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#afdd13bb4e762c4b904ed75b268359757" > TrickPlayHandler::Process< / a > (< / div >
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< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   std::unique_ptr< StreamData> input_stream_data) {< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "comment" > // The non-trick play stream is dispatched at index 0.< / span > < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "comment" > // The trick-play streams are dispatched to index 1, index 2 and so on.< / span > < / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   DCHECK_EQ(input_stream_data-> stream_index, 0u);< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   std::unique_ptr< StreamData> output_stream_data(< span class = "keyword" > new< / span > < a class = "code" href = "../../d0/d4c/structshaka_1_1media_1_1StreamData.html" > StreamData< / a > ());< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   *output_stream_data = *input_stream_data;< / div >
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< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   Status status = < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca" > Dispatch< / a > (std::move(output_stream_data));< / div >
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< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keywordflow" > if< / span > (!status.ok()) {< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   }< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   std::shared_ptr< StreamData> stream_data(std::move(input_stream_data));< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "keywordflow" > if< / span > (stream_data-> stream_data_type == StreamDataType::kStreamInfo) {< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keywordflow" > if< / span > (stream_data-> stream_info-> stream_type() != kStreamVideo) {< / div >
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< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   status.SetError(error::TRICK_PLAY_ERROR,< / div >
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< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < span class = "stringliteral" > " Trick play does not support non-video stream" < / span > );< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   }< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "../../d6/db1/classshaka_1_1media_1_1VideoStreamInfo.html" > VideoStreamInfo< / a > & video_stream_info =< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "keyword" > static_cast< < / span > < span class = "keyword" > const < / span > < a class = "code" href = "../../d6/db1/classshaka_1_1media_1_1VideoStreamInfo.html" > VideoStreamInfo< / a > & < span class = "keyword" > > < / span > (*stream_data-> stream_info);< / div >
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< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "keywordflow" > if< / span > (video_stream_info.trick_play_factor() > 0) {< / div >
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< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   status.SetError(error::TRICK_PLAY_ERROR,< / div >
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< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "stringliteral" > " This stream is alreay a trick play stream." < / span > );< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   }< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   }< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keywordflow" > if< / span > (stream_data-> stream_data_type == StreamDataType::kSegmentInfo) {< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > & cached_data : cached_stream_data_) {< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "comment" > // It is possible that trick play stream has large frame duration that< / span > < / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < span class = "comment" > // some segments in the main stream are skipped. To avoid empty segments,< / span > < / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < span class = "comment" > // only cache SegementInfo with MediaSample before it.< / span > < / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "keywordflow" > if< / span > (!cached_data.empty() & & < / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   cached_data.back()-> stream_data_type == StreamDataType::kMediaSample)< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   cached_data.push_back(stream_data);< / 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 >
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< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "keywordflow" > if< / span > (stream_data-> stream_data_type != StreamDataType::kMediaSample) {< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "comment" > // Non media sample stream data needs to be dispatched to every output< / span > < / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "comment" > // stream. It is just cached in every queue until a new key frame comes or< / span > < / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "comment" > // the stream is flushed.< / span > < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < cached_stream_data_.size(); ++i)< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   cached_stream_data_[i].push_back(stream_data);< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / 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 >   < span class = "keywordflow" > if< / span > (stream_data-> media_sample-> is_key_frame()) {< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < span class = "comment" > // For a new key frame, some of the trick play streams may include it.< / span > < / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "comment" > // The cached data in those trick play streams will be processed.< / span > < / div >
2017-05-17 21:54:32 +00:00
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   DCHECK_EQ(trick_play_factors_.size(), cached_stream_data_.size());< / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < cached_stream_data_.size(); ++i) {< / div >
2017-05-17 21:54:32 +00:00
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   uint32_t factor = trick_play_factors_[i];< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keywordflow" > if< / span > (total_key_frames_ % factor == 0) {< / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "comment" > // Delay processing cached stream data until receiving the second key< / span > < / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "comment" > // frame so that the GOP size could be derived.< / span > < / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "keywordflow" > if< / span > (!cached_stream_data_[i].empty() & & total_key_frames_ > 0) {< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < span class = "comment" > // Num of frames between first two key frames in the trick play< / span > < / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "comment" > // streams. Use this as the playback_rate.< / span > < / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "keywordflow" > if< / span > (playback_rates_[i] == 0)< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   playback_rates_[i] = total_frames_;< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < / div >
2017-06-30 20:14:31 +00:00
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   Status status =< / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   ProcessCachedStreamData(i + 1, & cached_stream_data_[i]);< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   }< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   cached_stream_data_[i].push_back(stream_data);< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   }< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   }< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   total_key_frames_++;< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   }< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   total_frames_++;< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   prev_sample_end_timestamp_ =< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   stream_data-> media_sample-> dts() + stream_data-> media_sample-> duration();< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   < / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / 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" > < a class = "line" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#addbe1be8281bceb8e84df865424dded3" > 135< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#addbe1be8281bceb8e84df865424dded3" > TrickPlayHandler::ValidateOutputStreamIndex< / a > (< span class = "keywordtype" > size_t< / span > stream_index)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "comment" > // Output stream index should be less than the number of trick play< / span > < / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "comment" > // streams + one original stream.< / span > < / div >
2017-05-17 21:54:32 +00:00
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "keywordflow" > return< / span > stream_index < = trick_play_factors_.size();< / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   };< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < / div >
2017-06-30 20:14:31 +00:00
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a9a6c29c88fdeb667d5592142d6815bfa" > 141< / a > < / span >   Status < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a9a6c29c88fdeb667d5592142d6815bfa" > TrickPlayHandler::OnFlushRequest< / a > (< span class = "keywordtype" > size_t< / span > input_stream_index) {< / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   DCHECK_EQ(input_stream_index, 0u)< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < < < span class = "stringliteral" > " Trick Play Handler should only have single input." < / span > ;< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < cached_stream_data_.size(); ++i) {< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   LOG_IF(WARNING, playback_rates_[i] == 0)< / div >
2017-05-17 21:54:32 +00:00
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   < < < span class = "stringliteral" > " Max playout rate for trick play factor " < / span > < < trick_play_factors_[i]< / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < < < span class = "stringliteral" > " is not determined. " < / span > < / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < < < span class = "stringliteral" > " Specify it as total number of frames: " < / span > < < total_frames_ < < < span class = "stringliteral" > " ." < / span > ;< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   playback_rates_[i] = total_frames_;< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   ProcessCachedStreamData(i + 1, & cached_stream_data_[i]);< / 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" > return< / span > < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ab644ca7b0a0dbcbc42936f2dfb979ca5" > MediaHandler::FlushAllDownstreams< / a > ();< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   }< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keywordtype" > bool< / span > TrickPlayHandler::HasMainStream() {< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "keyword" > const< / span > < span class = "keyword" > auto< / span > & handlers = output_handlers();< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < span class = "keyword" > const< / span > < span class = "keyword" > auto< / span > & main_stream_handler = handlers.find(kMainStreamIndex);< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < span class = "keywordflow" > if< / span > (main_stream_handler == handlers.end()) {< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   }< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "keywordflow" > return< / span > main_stream_handler-> second.first != < span class = "keyword" > nullptr< / span > ;< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   }< / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   Status TrickPlayHandler::ProcessCachedStreamData(< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "keywordtype" > size_t< / span > output_stream_index,< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   std::deque< std::shared_ptr< StreamData> > * cached_stream_data) {< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "keywordflow" > while< / span > (!cached_stream_data-> empty()) {< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   Status status =< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   ProcessOneStreamData(output_stream_index, cached_stream_data-> front());< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < span class = "keywordflow" > if< / span > (!status.ok()) {< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   }< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   cached_stream_data-> pop_front();< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   }< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   }< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   Status TrickPlayHandler::ProcessOneStreamData(< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < span class = "keywordtype" > size_t< / span > output_stream_index,< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "keyword" > const< / span > std::shared_ptr< StreamData> & stream_data) {< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "keywordtype" > size_t< / span > trick_play_index = output_stream_index - 1;< / div >
2017-05-17 21:54:32 +00:00
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   uint32_t trick_play_factor = trick_play_factors_[trick_play_index];< / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   Status status;< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < span class = "keywordflow" > switch< / span > (stream_data-> stream_data_type) {< / div >
2017-05-17 21:54:32 +00:00
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < span class = "comment" > // trick_play_factor in StreamInfo should be modified.< / span > < / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < span class = "keywordflow" > case< / span > StreamDataType::kStreamInfo: {< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keyword" > const< / span > VideoStreamInfo& video_stream_info =< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < span class = "keyword" > static_cast< < / span > < span class = "keyword" > const < / span > VideoStreamInfo& < span class = "keyword" > > < / span > (*stream_data-> stream_info);< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   std::shared_ptr< VideoStreamInfo> trick_play_video_stream_info(< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   < span class = "keyword" > new< / span > VideoStreamInfo(video_stream_info));< / div >
2017-05-17 21:54:32 +00:00
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   trick_play_video_stream_info-> set_trick_play_factor(trick_play_factor);< / div >
2017-05-15 16:24:34 +00:00
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   DCHECK_GT(playback_rates_[trick_play_index], 0u);< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   trick_play_video_stream_info-> set_playback_rate(< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   playback_rates_[trick_play_index]);< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   status =< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a855263bdfc4c0e24d94277dc4a1b415f" > DispatchStreamInfo< / a > (output_stream_index, trick_play_video_stream_info);< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   }< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   < span class = "keywordflow" > case< / span > StreamDataType::kMediaSample: {< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < span class = "keywordflow" > if< / span > (stream_data-> media_sample-> is_key_frame()) {< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   std::shared_ptr< MediaSample> trick_play_media_sample =< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < a class = "code" href = "../../d7/d6d/classshaka_1_1media_1_1MediaSample.html#ad8975dbb21747ff32c8604f5489bf5c9" > MediaSample::CopyFrom< / a > (*(stream_data-> media_sample));< / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   trick_play_media_sample-> set_duration(prev_sample_end_timestamp_ -< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   stream_data-> media_sample-> dts());< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   status =< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a73dfbc5de4901830cfd25775e2e4fcff" > DispatchMediaSample< / a > (output_stream_index, trick_play_media_sample);< / 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 >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   }< / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   std::unique_ptr< StreamData> new_stream_data(< span class = "keyword" > new< / span > StreamData(*stream_data));< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   new_stream_data-> stream_index = output_stream_index;< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   status = < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca" > Dispatch< / a > (std::move(new_stream_data));< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   }< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   }< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   < / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1MediaHandler_html_a73dfbc5de4901830cfd25775e2e4fcff" > < div class = "ttname" > < a href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a73dfbc5de4901830cfd25775e2e4fcff" > shaka::media::MediaHandler::DispatchMediaSample< / a > < / div > < div class = "ttdeci" > Status DispatchMediaSample(size_t stream_index, std::shared_ptr< MediaSample > media_sample)< / div > < div class = "ttdoc" > Dispatch the media sample to downstream handlers. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d93/media__handler_8h_source.html#l00137" > media_handler.h:137< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1MediaHandler_html_accd62dd4def920571f95f4e1a98ab7ca" > < div class = "ttname" > < a href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca" > shaka::media::MediaHandler::Dispatch< / a > < / div > < div class = "ttdeci" > Status Dispatch(std::unique_ptr< StreamData > stream_data)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d2/de9/media__handler_8cc_source.html#l00052" > media_handler.cc:52< / a > < / div > < / div >
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< div class = "ttc" id = "structshaka_1_1media_1_1StreamData_html" > < div class = "ttname" > < a href = "../../d0/d4c/structshaka_1_1media_1_1StreamData.html" > shaka::media::StreamData< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d93/media__handler_8h_source.html#l00047" > media_handler.h:47< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1TrickPlayHandler_html_addbe1be8281bceb8e84df865424dded3" > < div class = "ttname" > < a href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#addbe1be8281bceb8e84df865424dded3" > shaka::media::TrickPlayHandler::ValidateOutputStreamIndex< / a > < / div > < div class = "ttdeci" > bool ValidateOutputStreamIndex(size_t stream_index) const override< / div > < div class = "ttdoc" > Validate if the stream at the specified index actually exists. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d87/trick__play__handler_8cc_source.html#l00135" > trick_play_handler.cc:135< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1MediaHandler_html_ab644ca7b0a0dbcbc42936f2dfb979ca5" > < div class = "ttname" > < a href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ab644ca7b0a0dbcbc42936f2dfb979ca5" > shaka::media::MediaHandler::FlushAllDownstreams< / a > < / div > < div class = "ttdeci" > Status FlushAllDownstreams()< / div > < div class = "ttdoc" > Flush all connected downstreams. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d2/de9/media__handler_8cc_source.html#l00072" > media_handler.cc:72< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1MediaHandler_html_a855263bdfc4c0e24d94277dc4a1b415f" > < div class = "ttname" > < a href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a855263bdfc4c0e24d94277dc4a1b415f" > shaka::media::MediaHandler::DispatchStreamInfo< / a > < / div > < div class = "ttdeci" > Status DispatchStreamInfo(size_t stream_index, std::shared_ptr< StreamInfo > stream_info)< / div > < div class = "ttdoc" > Dispatch the stream info to downstream handlers. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d93/media__handler_8h_source.html#l00127" > media_handler.h:127< / a > < / div > < / div >
2017-05-15 16:24:34 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1TrickPlayHandler_html_a9a6c29c88fdeb667d5592142d6815bfa" > < div class = "ttname" > < a href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a9a6c29c88fdeb667d5592142d6815bfa" > shaka::media::TrickPlayHandler::OnFlushRequest< / a > < / div > < div class = "ttdeci" > Status OnFlushRequest(size_t input_stream_index) override< / div > < div class = "ttdoc" > Event handler for flush request at the specific input stream index. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d87/trick__play__handler_8cc_source.html#l00141" > trick_play_handler.cc:141< / a > < / div > < / div >
2017-03-27 19:39:08 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1MediaSample_html_ad8975dbb21747ff32c8604f5489bf5c9" > < div class = "ttname" > < a href = "../../d7/d6d/classshaka_1_1media_1_1MediaSample.html#ad8975dbb21747ff32c8604f5489bf5c9" > shaka::media::MediaSample::CopyFrom< / a > < / div > < div class = "ttdeci" > static std::shared_ptr< MediaSample > CopyFrom(const uint8_t *data, size_t size, bool is_key_frame)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d0d/media__sample_8cc_source.html#l00045" > media_sample.cc:45< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1TrickPlayHandler_html_a3fd2fae199e0a9607e83e02724896c10" > < div class = "ttname" > < a href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#a3fd2fae199e0a9607e83e02724896c10" > shaka::media::TrickPlayHandler::InitializeInternal< / a > < / div > < div class = "ttdeci" > Status InitializeInternal() override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d87/trick__play__handler_8cc_source.html#l00036" > trick_play_handler.cc:36< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1VideoStreamInfo_html" > < div class = "ttname" > < a href = "../../d6/db1/classshaka_1_1media_1_1VideoStreamInfo.html" > shaka::media::VideoStreamInfo< / a > < / div > < div class = "ttdoc" > Holds video stream information. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/d87/video__stream__info_8h_source.html#l00023" > video_stream_info.h:23< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1MediaHandler_html_a0fac1fe2d593e78d47244acdfa21759d" > < div class = "ttname" > < a href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d" > shaka::media::MediaHandler::SetHandler< / a > < / div > < div class = "ttdeci" > Status SetHandler(size_t output_stream_index, std::shared_ptr< MediaHandler > handler)< / div > < div class = "ttdoc" > Connect downstream handler at the specified output stream index. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d2/de9/media__handler_8cc_source.html#l00012" > media_handler.cc:12< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1TrickPlayHandler_html_afdd13bb4e762c4b904ed75b268359757" > < div class = "ttname" > < a href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html#afdd13bb4e762c4b904ed75b268359757" > shaka::media::TrickPlayHandler::Process< / a > < / div > < div class = "ttdeci" > Status Process(std::unique_ptr< StreamData > stream_data) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d87/trick__play__handler_8cc_source.html#l00052" > trick_play_handler.cc:52< / a > < / div > < / div >
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