mirror of
https://github.com/RetroShare/RetroShare.git
synced 2024-10-01 02:35:48 -04:00
48a34ba7a5
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4969 b45a01b8-16f6-495d-af2f-9b41ad6348cc
544 lines
11 KiB
C++
544 lines
11 KiB
C++
/*
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* libretroshare/src/services p3vors.cc
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*
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* Voice Over Retroshare Service for RetroShare.
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*
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* Copyright 2011-2011 by Robert Fernie.
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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 Library General Public
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* License Version 2 as published by the Free Software Foundation.
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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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA.
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*
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* Please report all bugs and problems to "retroshare@lunamutt.com".
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*
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*/
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#include "util/rsdir.h"
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#include "retroshare/rsiface.h"
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#include "pqi/pqibin.h"
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#include "pqi/pqinotify.h"
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#include "pqi/pqistore.h"
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#include "pqi/p3linkmgr.h"
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#include <serialiser/rsserial.h>
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#include <serialiser/rsconfigitems.h>
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#include "services/p3vors.h"
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#include "services/rsvoipitems.h"
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#include <sys/time.h>
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/****
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* #define DEBUG_VORS 1
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****/
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/* DEFINE INTERFACE POINTER! */
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RsVoip *rsVoip = NULL;
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#define MAX_PONG_RESULTS 150
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#define VORS_PING_PERIOD 10
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/************ IMPLEMENTATION NOTES *********************************
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*
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* Voice over Retroshare ;)
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*
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* This will be a simple test VoIP system aimed at testing out the possibilities.
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*
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* Important things to test:
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* 1) lag, and variability in data rate
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* - To do this we time tag every packet..., the destination can use this info to calculate the results.
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* - Like imixitup. Dt = clock_diff + lag.
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* we expect clock_diff to be relatively constant, but lag to vary.
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* lag cannot be negative, so minimal Dt is ~clock_diff, and delays on this are considered +lag.
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*
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* 2) we could directly measure lag. ping back and forth with Timestamps.
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*
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* 3) we also want to measure bandwidth...
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* - not sure the best method?
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* one way: send a ping, then a large amount of data (5 seconds worth), then another ping.
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* the delta in timestamps should be a decent indication of bandwidth.
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* say we have a 100kb/s connection... need 500kb.
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* actually the amount of data should be based on a reasonable maximum that we require.
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* what does decent video require?
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* Audio we can test for 64kb/s - which seems like a decent rate: e.g. mono, 16bit 22k = 1 x 2 x 22k = 44 kilobytes/sec
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* best to do this without a VoIP call going on ;)
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*
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*
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*/
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#if 0
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class RsVorsLagItem: public RsItem
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{
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public:
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uint32_t seqno;
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uint32_t type; // REQUEST, RESPONSE.
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double peerTs;
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};
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class RsVorsDatatem: public RsItem
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{
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public:
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uint32_t seqno;
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uint32_t encoding;
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uint32_t audiolength; // in 44.1 kbs samples.
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uint32_t datalength;
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void *data;
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};
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#endif
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#ifdef WINDOWS_SYS
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#include <time.h>
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#include <sys/timeb.h>
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#endif
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static double getCurrentTS()
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{
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#ifndef WINDOWS_SYS
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struct timeval cts_tmp;
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gettimeofday(&cts_tmp, NULL);
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double cts = (cts_tmp.tv_sec) + ((double) cts_tmp.tv_usec) / 1000000.0;
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#else
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struct _timeb timebuf;
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_ftime( &timebuf);
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double cts = (timebuf.time) + ((double) timebuf.millitm) / 1000.0;
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#endif
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return cts;
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}
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static uint64_t convertTsTo64bits(double ts)
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{
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uint32_t secs = (uint32_t) ts;
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uint32_t usecs = (uint32_t) ((ts - (double) secs) * 1000000);
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uint64_t bits = (((uint64_t) secs) << 32) + usecs;
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return bits;
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}
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static double convert64bitsToTs(uint64_t bits)
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{
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uint32_t usecs = (uint32_t) (bits & 0xffffffff);
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uint32_t secs = (uint32_t) ((bits >> 32) & 0xffffffff);
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double ts = (secs) + ((double) usecs) / 1000000.0;
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return ts;
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}
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p3VoRS::p3VoRS(RsPluginHandler *handler)
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: RsPQIService(RS_SERVICE_TYPE_VOIP_PLUGIN,CONFIG_TYPE_VOIP_PLUGIN,0,handler), mVorsMtx("p3VoRS"), mLinkMgr(handler->getLinkMgr())
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{
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addSerialType(new RsVoipSerialiser());
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mSentPingTime = 0;
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mCounter = 0;
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}
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int p3VoRS::tick()
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{
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processIncoming();
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sendPackets();
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return 0;
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}
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int p3VoRS::status()
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{
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return 1;
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}
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int p3VoRS::sendPackets()
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{
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time_t now = time(NULL);
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time_t pt;
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{
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RsStackMutex stack(mVorsMtx); /****** LOCKED MUTEX *******/
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pt = mSentPingTime;
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}
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if (now - pt > VORS_PING_PERIOD)
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{
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sendPingMeasurements();
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RsStackMutex stack(mVorsMtx); /****** LOCKED MUTEX *******/
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mSentPingTime = now;
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}
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return true ;
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}
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int p3VoRS::sendVoipData(const void *data,uint32_t size)
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{
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std::cerr << "Sending " << size << " bytes of voip data." << std::endl;
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return size ;
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}
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void p3VoRS::sendPingMeasurements()
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{
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/* we ping our peers */
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/* who is online? */
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std::list<std::string> idList;
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mLinkMgr->getOnlineList(idList);
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double ts = getCurrentTS();
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#ifdef DEBUG_VORS
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std::cerr << "p3VoRS::sendPingMeasurements() @ts: " << ts;
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std::cerr << std::endl;
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#endif
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/* prepare packets */
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std::list<std::string>::iterator it;
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for(it = idList.begin(); it != idList.end(); it++)
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{
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#ifdef DEBUG_VORS
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std::cerr << "p3VoRS::sendPingMeasurements() Pinging: " << *it;
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std::cerr << std::endl;
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#endif
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/* create the packet */
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RsVoipPingItem *pingPkt = new RsVoipPingItem();
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pingPkt->PeerId(*it);
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pingPkt->mSeqNo = mCounter;
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pingPkt->mPingTS = convertTsTo64bits(ts);
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storePingAttempt(*it, ts, mCounter);
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#ifdef DEBUG_VORS
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std::cerr << "p3VoRS::sendPingMeasurements() With Packet:";
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std::cerr << std::endl;
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pingPkt->print(std::cerr, 10);
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#endif
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sendItem(pingPkt);
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}
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RsStackMutex stack(mVorsMtx); /****** LOCKED MUTEX *******/
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mCounter++;
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}
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int p3VoRS::processIncoming()
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{
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/* for each packet - pass to specific handler */
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RsItem *item = NULL;
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while(NULL != (item = recvItem()))
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{
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switch(item->PacketSubType())
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{
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default:
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break;
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case RS_PKT_SUBTYPE_VOIP_PING:
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{
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handlePing(item);
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}
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break;
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case RS_PKT_SUBTYPE_VOIP_PONG:
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{
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handlePong(item);
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}
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break;
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#if 0
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/* THESE ARE ALL FUTURISTIC DATA TYPES */
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case RS_DATA_ITEM:
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{
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handleData(item);
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}
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break;
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case RS_BANDWIDTH_PING_ITEM:
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{
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handleBandwidthPing(item);
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}
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break;
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case RS_BANDWIDTH_PONG_ITEM:
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{
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handleBandwidthPong(item);
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}
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break;
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#endif
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}
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/* clean up */
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delete item;
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}
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return true ;
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}
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int p3VoRS::handlePing(RsItem *item)
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{
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/* cast to right type */
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RsVoipPingItem *ping = (RsVoipPingItem *) item;
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#ifdef DEBUG_VORS
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std::cerr << "p3VoRS::handlePing() Recvd Packet from: " << ping->PeerId();
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std::cerr << std::endl;
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#endif
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/* with a ping, we just respond as quickly as possible - they do all the analysis */
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RsVoipPongItem *pong = new RsVoipPongItem();
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pong->PeerId(ping->PeerId());
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pong->mPingTS = ping->mPingTS;
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pong->mSeqNo = ping->mSeqNo;
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// add our timestamp.
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double ts = getCurrentTS();
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pong->mPongTS = convertTsTo64bits(ts);
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#ifdef DEBUG_VORS
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std::cerr << "p3VoRS::handlePing() With Packet:";
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std::cerr << std::endl;
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pong->print(std::cerr, 10);
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#endif
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sendItem(pong);
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return true ;
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}
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int p3VoRS::handlePong(RsItem *item)
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{
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/* cast to right type */
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RsVoipPongItem *pong = (RsVoipPongItem *) item;
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#ifdef DEBUG_VORS
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std::cerr << "p3VoRS::handlePong() Recvd Packet from: " << pong->PeerId();
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std::cerr << std::endl;
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pong->print(std::cerr, 10);
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#endif
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/* with a pong, we do the maths! */
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double recvTS = getCurrentTS();
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double pingTS = convert64bitsToTs(pong->mPingTS);
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double pongTS = convert64bitsToTs(pong->mPongTS);
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double rtt = recvTS - pingTS;
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double offset = pongTS - (recvTS - rtt / 2.0); // so to get to their time, we go ourTS + offset.
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#ifdef DEBUG_VORS
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std::cerr << "p3VoRS::handlePong() Timing:";
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std::cerr << std::endl;
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std::cerr << "\tpingTS: " << pingTS;
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std::cerr << std::endl;
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std::cerr << "\tpongTS: " << pongTS;
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std::cerr << std::endl;
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std::cerr << "\trecvTS: " << recvTS;
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std::cerr << std::endl;
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std::cerr << "\t ==> rtt: " << rtt;
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std::cerr << std::endl;
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std::cerr << "\t ==> offset: " << offset;
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std::cerr << std::endl;
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#endif
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storePongResult(pong->PeerId(), pong->mSeqNo, pingTS, rtt, offset);
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return true ;
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}
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int p3VoRS::storePingAttempt(std::string id, double ts, uint32_t seqno)
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{
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RsStackMutex stack(mVorsMtx); /****** LOCKED MUTEX *******/
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/* find corresponding local data */
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VorsPeerInfo *peerInfo = locked_GetPeerInfo(id);
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peerInfo->mCurrentPingTS = ts;
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peerInfo->mCurrentPingCounter = seqno;
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peerInfo->mSentPings++;
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if (!peerInfo->mCurrentPongRecvd)
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{
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peerInfo->mLostPongs++;
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}
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peerInfo->mCurrentPongRecvd = true;
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return 1;
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}
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int p3VoRS::storePongResult(std::string id, uint32_t counter, double ts, double rtt, double offset)
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{
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RsStackMutex stack(mVorsMtx); /****** LOCKED MUTEX *******/
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/* find corresponding local data */
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VorsPeerInfo *peerInfo = locked_GetPeerInfo(id);
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if (peerInfo->mCurrentPingCounter != counter)
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{
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#ifdef DEBUG_VORS
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std::cerr << "p3VoRS::storePongResult() ERROR Severly Delayed Measurements!" << std::endl;
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#endif
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}
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else
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{
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peerInfo->mCurrentPongRecvd = true;
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}
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peerInfo->mPongResults.push_back(RsVoipPongResult(ts, rtt, offset));
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while(peerInfo->mPongResults.size() > MAX_PONG_RESULTS)
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{
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peerInfo->mPongResults.pop_front();
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}
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/* should do calculations */
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return 1;
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}
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uint32_t p3VoRS::getPongResults(std::string id, int n, std::list<RsVoipPongResult> &results)
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{
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RsStackMutex stack(mVorsMtx); /****** LOCKED MUTEX *******/
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VorsPeerInfo *peer = locked_GetPeerInfo(id);
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std::list<RsVoipPongResult>::reverse_iterator it;
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int i = 0;
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for(it = peer->mPongResults.rbegin(); (it != peer->mPongResults.rend()) && (i < n); it++, i++)
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{
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/* reversing order - so its easy to trim later */
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results.push_back(*it);
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}
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return i ;
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}
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VorsPeerInfo *p3VoRS::locked_GetPeerInfo(std::string id)
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{
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std::map<std::string, VorsPeerInfo>::iterator it;
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it = mPeerInfo.find(id);
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if (it == mPeerInfo.end())
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{
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/* add it in */
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VorsPeerInfo pinfo;
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/* initialise entry */
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pinfo.initialisePeerInfo(id);
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mPeerInfo[id] = pinfo;
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it = mPeerInfo.find(id);
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}
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return &(it->second);
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}
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bool VorsPeerInfo::initialisePeerInfo(std::string id)
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{
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mId = id;
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/* reset variables */
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mCurrentPingTS = 0;
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mCurrentPingCounter = 0;
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mCurrentPongRecvd = true;
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mSentPings = 0;
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mLostPongs = 0;
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mPongResults.clear();
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return true;
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}
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void p3VoRS::setVoipATransmit(int t)
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{
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_atransmit = t ;
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IndicateConfigChanged() ;
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}
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void p3VoRS::setVoipVoiceHold(int vh)
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{
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_voice_hold = vh ;
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IndicateConfigChanged() ;
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}
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void p3VoRS::setVoipfVADmin(int vad)
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{
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_vadmin = vad ;
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IndicateConfigChanged() ;
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}
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void p3VoRS::setVoipfVADmax(int vad)
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{
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_vadmax = vad ;
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IndicateConfigChanged() ;
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}
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void p3VoRS::setVoipiNoiseSuppress(int n)
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{
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_noise_suppress = n ;
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IndicateConfigChanged() ;
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}
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void p3VoRS::setVoipiMinLoudness(int ml)
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{
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_min_loudness = ml ;
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IndicateConfigChanged() ;
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}
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void p3VoRS::setVoipEchoCancel(bool b)
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{
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_echo_cancel = b ;
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IndicateConfigChanged() ;
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}
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bool p3VoRS::saveList(bool& cleanup, std::list<RsItem*>&)
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{
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cleanup = true ;
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return true ;
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}
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bool p3VoRS::loadList(std::list<RsItem*>& load)
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{
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return true ;
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}
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RsSerialiser *p3VoRS::setupSerialiser()
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{
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RsSerialiser *rsSerialiser = new RsSerialiser();
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rsSerialiser->addSerialType(new RsVoipSerialiser());
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rsSerialiser->addSerialType(new RsGeneralConfigSerialiser());
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return rsSerialiser ;
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}
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