mirror of
https://github.com/ossrs/srs.git
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170 lines
5.3 KiB
C++
170 lines
5.3 KiB
C++
/**
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2020 Winlin
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SRS_APP_DASH_HPP
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#define SRS_APP_DASH_HPP
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#include <srs_core.hpp>
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#include <string>
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#include <vector>
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#include <srs_app_fragment.hpp>
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class SrsRequest;
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class SrsOriginHub;
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class SrsSharedPtrMessage;
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class SrsFormat;
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class SrsFileWriter;
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class SrsMpdWriter;
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class SrsMp4M2tsInitEncoder;
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class SrsMp4M2tsSegmentEncoder;
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// The init mp4 for FMP4.
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class SrsInitMp4 : public SrsFragment
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{
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private:
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SrsFileWriter* fw;
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SrsMp4M2tsInitEncoder* init;
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public:
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SrsInitMp4();
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virtual ~SrsInitMp4();
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public:
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// Write the init mp4 file, with the tid(track id).
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virtual srs_error_t write(SrsFormat* format, bool video, int tid);
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};
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// The FMP4(Fragmented MP4) for DASH streaming.
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class SrsFragmentedMp4 : public SrsFragment
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{
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private:
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SrsFileWriter* fw;
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SrsMp4M2tsSegmentEncoder* enc;
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public:
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SrsFragmentedMp4();
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virtual ~SrsFragmentedMp4();
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public:
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// Initialize the fragment, create the home dir, open the file.
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virtual srs_error_t initialize(SrsRequest* r, bool video, SrsMpdWriter* mpd, uint32_t tid);
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// Write media message to fragment.
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virtual srs_error_t write(SrsSharedPtrMessage* shared_msg, SrsFormat* format);
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// Reap the fragment, close the fd and rename tmp to official file.
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virtual srs_error_t reap(uint64_t& dts);
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};
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// The writer to write MPD for DASH.
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class SrsMpdWriter
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{
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private:
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SrsRequest* req;
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srs_utime_t last_update_mpd;
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private:
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// The duration of fragment in srs_utime_t.
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srs_utime_t fragment;
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// The period to update the mpd in srs_utime_t.
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srs_utime_t update_period;
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// The timeshift buffer depth in srs_utime_t.
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srs_utime_t timeshit;
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// The base or home dir for dash to write files.
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std::string home;
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// The MPD path template, from which to build the file path.
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std::string mpd_file;
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private:
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// The home for fragment, relative to home.
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std::string fragment_home;
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public:
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SrsMpdWriter();
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virtual ~SrsMpdWriter();
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public:
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virtual srs_error_t initialize(SrsRequest* r);
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virtual srs_error_t on_publish();
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virtual void on_unpublish();
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// Write MPD according to parsed format of stream.
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virtual srs_error_t write(SrsFormat* format);
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public:
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// Get the fragment relative home and filename.
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// The basetime is the absolute time in srs_utime_t, while the sn(sequence number) is basetime/fragment.
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virtual srs_error_t get_fragment(bool video, std::string& home, std::string& filename, int64_t& sn, srs_utime_t& basetime);
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};
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// The controller for DASH, control the MPD and FMP4 generating system.
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class SrsDashController
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{
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private:
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SrsRequest* req;
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SrsMpdWriter* mpd;
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private:
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SrsFragmentedMp4* vcurrent;
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SrsFragmentWindow* vfragments;
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SrsFragmentedMp4* acurrent;
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SrsFragmentWindow* afragments;
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uint64_t audio_dts;
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uint64_t video_dts;
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private:
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// The fragment duration in srs_utime_t to reap it.
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srs_utime_t fragment;
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private:
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std::string home;
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int video_tack_id;
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int audio_track_id;
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public:
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SrsDashController();
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virtual ~SrsDashController();
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public:
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virtual srs_error_t initialize(SrsRequest* r);
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virtual srs_error_t on_publish();
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virtual void on_unpublish();
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virtual srs_error_t on_audio(SrsSharedPtrMessage* shared_audio, SrsFormat* format);
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virtual srs_error_t on_video(SrsSharedPtrMessage* shared_video, SrsFormat* format);
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private:
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virtual srs_error_t refresh_mpd(SrsFormat* format);
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virtual srs_error_t refresh_init_mp4(SrsSharedPtrMessage* msg, SrsFormat* format);
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};
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// The MPEG-DASH encoder, transmux RTMP to DASH.
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class SrsDash
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{
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private:
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bool enabled;
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private:
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SrsRequest* req;
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SrsOriginHub* hub;
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SrsDashController* controller;
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public:
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SrsDash();
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virtual ~SrsDash();
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public:
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// Initalize the encoder.
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virtual srs_error_t initialize(SrsOriginHub* h, SrsRequest* r);
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// When stream start publishing.
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virtual srs_error_t on_publish();
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// When got an shared audio message.
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virtual srs_error_t on_audio(SrsSharedPtrMessage* shared_audio, SrsFormat* format);
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// When got an shared video message.
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virtual srs_error_t on_video(SrsSharedPtrMessage* shared_video, SrsFormat* format);
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// When stream stop publishing.
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virtual void on_unpublish();
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};
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#endif
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