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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@495 d0543943-73ff-0310-b7d9-9358b9ac24b2
123 lines
4.0 KiB
C++
123 lines
4.0 KiB
C++
/*
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This file is a part of JRTPLIB
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Copyright (c) 1999-2005 Jori Liesenborgs
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Contact: jori@lumumba.uhasselt.be
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This library was developed at the "Expertisecentrum Digitale Media"
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(http://www.edm.uhasselt.be), a research center of the Hasselt University
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(http://www.uhasselt.be). The library is based upon work done for
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my thesis at the School for Knowledge Technology (Belgium/The Netherlands).
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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*/
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#ifndef RTCPSCHEDULER_H
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#define RTCPSCHEDULER_H
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#include "rtpconfig.h"
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#include "rtptimeutilities.h"
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#include "rtprandom.h"
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class RTCPCompoundPacket;
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class RTPPacket;
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class RTPSources;
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class RTCPSchedulerParams
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{
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public:
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RTCPSchedulerParams();
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~RTCPSchedulerParams();
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int SetRTCPBandwidth(double bw); // bandwidth is in bytes per second
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double GetRTCPBandwidth() const { return bandwidth; }
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int SetSenderBandwidthFraction(double fraction);
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double GetSenderBandwidthFraction() const { return senderfraction; }
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int SetMinimumTransmissionInterval(const RTPTime &t);
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RTPTime GetMinimumTransmissionInterval() const { return mininterval; }
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void SetUseHalfAtStartup(bool usehalf) { usehalfatstartup = usehalf; }
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bool GetUseHalfAtStartup() const { return usehalfatstartup; }
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void SetRequestImmediateBYE(bool v) { immediatebye = v; }
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bool GetRequestImmediateBYE() const { return immediatebye; }
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private:
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double bandwidth;
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double senderfraction;
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RTPTime mininterval;
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bool usehalfatstartup;
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bool immediatebye;
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};
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class RTCPScheduler
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{
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public:
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RTCPScheduler(RTPSources &sources);
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~RTCPScheduler();
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void Reset();
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void SetParameters(const RTCPSchedulerParams ¶ms) { schedparams = params; }
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RTCPSchedulerParams GetParameters() const { return schedparams; }
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void SetHeaderOverhead(size_t numbytes) { headeroverhead = numbytes; }
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size_t GetHeaderOverhead() const { return headeroverhead; }
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void AnalyseIncoming(RTCPCompoundPacket &rtcpcomppack);
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void AnalyseOutgoing(RTCPCompoundPacket &rtcpcomppack);
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// is to be called when a source times out or when a bye packet was received
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void ActiveMemberDecrease();
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void ScheduleBYEPacket(size_t packetsize);
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RTPTime GetTransmissionDelay();
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// Returns true is it is time to send a packet and then recalculates the next rtcp time
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// So, if the function would be called immediately after it returned true, it would then
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// return false
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bool IsTime();
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RTPTime CalculateDeterministicInterval(bool sender = false);
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private:
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void CalculateNextRTCPTime();
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void PerformReverseReconsideration();
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RTPTime CalculateBYETransmissionInterval();
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RTPTime CalculateTransmissionInterval(bool sender);
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RTPSources &sources;
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RTCPSchedulerParams schedparams;
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size_t headeroverhead;
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size_t avgrtcppacksize;
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bool hassentrtcp;
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bool firstcall;
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RTPTime nextrtcptime;
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RTPTime prevrtcptime;
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int pmembers;
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// for BYE packet scheduling
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bool byescheduled;
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int byemembers,pbyemembers;
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size_t avgbyepacketsize;
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bool sendbyenow;
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RTPRandom rtprand;
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};
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#endif // RTCPSCHEDULER_H
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