mirror of
https://github.com/mii443/libdatachannel.git
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92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
/**
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* Copyright (c) 2020 Staz Modrzynski
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* Copyright (c) 2020 Paul-Louis Ageneau
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef RTC_RTCP_H
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#define RTC_RTCP_H
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#include <utility>
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#include "include.hpp"
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#include "log.hpp"
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#include "message.hpp"
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#include "rtp.hpp"
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namespace rtc {
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class RTC_CPP_EXPORT RtcpHandler {
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protected:
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/**
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* Use this callback when trying to send custom data (such as RTCP) to the client.
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*/
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synchronized_callback<rtc::message_ptr> outgoingCallback;
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public:
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/**
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* Called when there is traffic coming from the peer
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* @param ptr
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* @return
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*/
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virtual rtc::message_ptr incoming(rtc::message_ptr ptr) = 0;
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/**
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* Called when there is traffic that needs to be sent to the peer
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* @param ptr
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* @return
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*/
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virtual rtc::message_ptr outgoing(rtc::message_ptr ptr) = 0;
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/**
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* This callback is used to send traffic back to the peer.
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* This callback skips calling the track's methods.
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* @param cb
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*/
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void onOutgoing(const std::function<void(rtc::message_ptr)> &cb);
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virtual bool requestKeyframe() { return false; }
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};
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class Track;
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// An RtcpSession can be plugged into a Track to handle the whole RTCP session
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class RTC_CPP_EXPORT RtcpReceivingSession : public RtcpHandler {
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public:
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rtc::message_ptr incoming(rtc::message_ptr ptr) override;
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rtc::message_ptr outgoing(rtc::message_ptr ptr) override;
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bool send(rtc::message_ptr ptr);
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void requestBitrate(unsigned int newBitrate);
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bool requestKeyframe() override;
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protected:
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void pushREMB(unsigned int bitrate);
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void pushRR(unsigned int lastSR_delay);
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void pushPLI();
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unsigned int mRequestedBitrate = 0;
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SSRC mSsrc = 0;
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uint32_t mGreatestSeqNo = 0;
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uint64_t mSyncRTPTS, mSyncNTPTS;
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};
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} // namespace rtc
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#endif // RTC_RTCP_H
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