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< li class = "navelem" > < a class = "el" href = "../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html" > packager< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_f99dae54fe7170f791f339b952d5067a.html" > media< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_f74090996960c752a82246b98a23aa62.html" > trick_play< / a > < / li > < / ul >
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< / div >
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< div class = "header" >
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< div class = "title" > trick_play_handler.h< / 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 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" > #ifndef PACKAGER_MEDIA_BASE_TRICK_PLAY_HANDLER_H_< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "preprocessor" > #define PACKAGER_MEDIA_BASE_TRICK_PLAY_HANDLER_H_< / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include < list> < / 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 = "preprocessor" > #include " packager/media/base/media_handler.h" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "keyword" > namespace < / span > < a class = "code" href = "../../d8/daf/namespaceshaka.html" > shaka< / a > {< / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "keyword" > class < / span > VideoStreamInfo;< / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "comment" > // The stream data in trick play streams are not simple duplicates. Some< / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "comment" > // information get changed (e.g. VideoStreamInfo.trick_play_factor).< / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > < a class = "line" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html" > 24< / a > < / span >   < span class = "keyword" > class < / span > < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html" > TrickPlayHandler< / a > : < span class = "keyword" > public< / span > < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html" > MediaHandler< / a > {< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "keyword" > public< / span > :< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "keyword" > explicit< / span > < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html" > TrickPlayHandler< / a > (uint32_t factor);< / 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 = "keyword" > private< / span > :< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html" > TrickPlayHandler< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html" > TrickPlayHandler< / a > & ) = < span class = "keyword" > delete< / span > ;< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html" > TrickPlayHandler< / a > & operator=(< span class = "keyword" > const< / span > < a class = "code" href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html" > TrickPlayHandler< / a > & ) = < span class = "keyword" > delete< / span > ;< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > InitializeInternal() < span class = "keyword" > override< / span > ;< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > Process(std::unique_ptr< StreamData> stream_data) < span class = "keyword" > override< / span > ;< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > OnFlushRequest(< span class = "keywordtype" > size_t< / span > input_stream_index) < span class = "keyword" > override< / span > ;< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > OnStreamInfo(< span class = "keyword" > const< / span > < a class = "code" href = "../../d5/db1/classshaka_1_1media_1_1StreamInfo.html" > StreamInfo< / a > & info);< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > OnSegmentInfo(std::shared_ptr< const SegmentInfo> info);< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > OnMediaSample(< span class = "keyword" > const< / span > < a class = "code" href = "../../d7/d6d/classshaka_1_1media_1_1MediaSample.html" > MediaSample< / a > & sample);< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > OnTrickFrame(< span class = "keyword" > const< / span > < a class = "code" href = "../../d7/d6d/classshaka_1_1media_1_1MediaSample.html" > MediaSample< / a > & sample);< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < span class = "keyword" > const< / span > uint32_t factor_;< / 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 >   uint64_t total_frames_ = 0;< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   uint64_t total_key_frames_ = 0;< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   uint64_t total_trick_frames_ = 0;< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "comment" > // We cannot just send video info through as we need to calculate the play< / span > < / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "comment" > // rate using the first two trick play frames. This reference should only be< / span > < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "comment" > // used to update the play back rate before video info is sent downstream.< / span > < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "comment" > // After getting sent downstream, this should never be used.< / span > < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   std::shared_ptr< VideoStreamInfo> video_info_;< / 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 = "comment" > // We need to track the segment that most recently finished so that we can< / span > < / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "comment" > // extend its duration if there are empty segments.< / span > < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   std::shared_ptr< SegmentInfo> previous_segment_;< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "comment" > // Since we are dropping frames, the time that those frames would have been< / span > < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > // on screen need to be added to the frame before them. Keep a reference to< / span > < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "comment" > // the most recent trick play frame so that we can grow its duration as we< / span > < / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "comment" > // drop other frames.< / span > < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   std::shared_ptr< MediaSample> previous_trick_frame_;< / 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 >   < span class = "comment" > // Since we cannot send messages downstream right away, keep a queue of< / span > < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "comment" > // messages that need to be sent down. At the start, we use this to queue< / span > < / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "comment" > // messages until we can send out |video_info_|. To ensure messages are< / span > < / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "comment" > // kept in order, messages are only dispatched through this queue and never< / span > < / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "comment" > // directly.< / span > < / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   std::list< std::unique_ptr< StreamData> > delayed_messages_;< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   };< / 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 = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < / div >
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< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < span class = "preprocessor" > #endif // PACKAGER_MEDIA_BASE_TRICK_PLAY_HANDLER_H_< / span > < / div >
< / div > <!-- fragment --> < / div > <!-- contents -->
< div class = "ttc" id = "anamespaceshaka_html" > < div class = "ttname" > < a href = "../../d8/daf/namespaceshaka.html" > shaka< / a > < / div > < div class = "ttdoc" > All the methods that are virtual are virtual for mocking.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011" > gflags_hex_bytes.cc:11< / a > < / div > < / div >
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< div class = "ttc" id = "aclassshaka_1_1Status_html" > < div class = "ttname" > < a href = "../../d2/d20/classshaka_1_1Status.html" > shaka::Status< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d13/status_8h_source.html#l00110" > status.h:110< / a > < / div > < / div >
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< div class = "ttc" id = "aclassshaka_1_1media_1_1TrickPlayHandler_html" > < div class = "ttname" > < a href = "../../db/dea/classshaka_1_1media_1_1TrickPlayHandler.html" > shaka::media::TrickPlayHandler< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dd/ddc/trick__play__handler_8h_source.html#l00024" > trick_play_handler.h:24< / a > < / div > < / div >
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< div class = "ttc" id = "aclassshaka_1_1media_1_1MediaHandler_html" > < div class = "ttname" > < a href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html" > shaka::media::MediaHandler< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d93/media__handler_8h_source.html#l00154" > media_handler.h:154< / a > < / div > < / div >
< div class = "ttc" id = "aclassshaka_1_1media_1_1MediaSample_html" > < div class = "ttname" > < a href = "../../d7/d6d/classshaka_1_1media_1_1MediaSample.html" > shaka::media::MediaSample< / a > < / div > < div class = "ttdoc" > Class to hold a media sample.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dd/d80/media__sample_8h_source.html#l00022" > media_sample.h:22< / a > < / div > < / div >
< div class = "ttc" id = "aclassshaka_1_1media_1_1StreamInfo_html" > < div class = "ttname" > < a href = "../../d5/db1/classshaka_1_1media_1_1StreamInfo.html" > shaka::media::StreamInfo< / a > < / div > < div class = "ttdoc" > Abstract class holds stream information.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/daa/stream__info_8h_source.html#l00065" > stream_info.h:65< / a > < / div > < / div >
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