1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
* Copyright (c) 2012 Yoann Blein
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
#include <Swiften/ScreenSharing/RTPSessionImpl.h>
#include <Swiften/ScreenSharing/RTPException.h>
#include <Swiften/Network/BoostUDPSocket.h>
#include <Swiften/Base/boost_bsignals.h>
#include <Swiften/Network/UDPSocket.h>
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <boost/bind.hpp>
#include <rtppacket.h>
#include <rtpsourcedata.h>
#include <rtpsessionparams.h>
#include <rtpipv4address.h>
#include <rtpipv6address.h>
#include <arpa/inet.h>
namespace Swift {
Sender::Sender(boost::shared_ptr<UDPSocket> udpSocket)
: udpSocket(udpSocket), jRTPLocalAddress(RTPSessionImpl::nativeAddressToJRTPAddress(udpSocket->getLocalAddress())) {
}
Sender::~Sender()
{
delete jRTPLocalAddress;
}
bool Sender::SendRTP(const void *data, size_t len) {
send(data, len);
return true;
}
bool Sender::SendRTCP(const void* data, size_t len) {
send(data, len);
return true;
}
bool Sender::ComesFromThisSender (const jrtplib::RTPAddress* address) {
return jRTPLocalAddress->IsSameAddress(address);
}
void Sender::send(const void* data, size_t len) {
uint8_t* uint8Data = (uint8_t*)data;
udpSocket->send(SafeByteArray(uint8Data, uint8Data + len));
}
RTPSessionImpl::RTPSessionImpl(boost::shared_ptr<UDPSocket> udpSocket, const RTPPayloadType& payloadType)
: udpSocket(udpSocket), payloadType(payloadType), jRTPRemotePeer(nativeAddressToJRTPAddress(udpSocket->getRemoteAddress())), sender(udpSocket)
{
jrtplib::RTPExternalTransmissionParams transparams(&sender, 0);
jrtplib::RTPSessionParams sessparams;
// IMPORTANT: The local timestamp unit MUST be set, otherwise RTCP Sender Report info will be calculated wrong
sessparams.SetOwnTimestampUnit(1.0 / payloadType.getClockrate());
checkError(session.Create(sessparams, &transparams, jrtplib::RTPTransmitter::ExternalProto));
packetInjecter = static_cast<jrtplib::RTPExternalTransmissionInfo*>(session.GetTransmissionInfo())->GetPacketInjector();
udpSocket->onDataRead.connect(boost::bind(&RTPSessionImpl::handleDataRead, this, _1));
udpSocket->listen();
}
RTPSessionImpl::~RTPSessionImpl()
{
delete jRTPRemotePeer;
}
void RTPSessionImpl::poll()
{
checkError(session.Poll()); // Required if threading disabled
}
void RTPSessionImpl::checkIncomingPackets()
{
// session.BeginDataAccess(); // useless without threading
if (session.GotoFirstSourceWithData() && session.GetCurrentSourceInfo()->GetRTPDataAddress()->IsSameAddress(jRTPRemotePeer)) {
do {
jrtplib::RTPPacket *pack;
while ((pack = session.GetNextPacket()) != NULL) {
onIncomingPacket(pack->GetPayloadData(), pack->GetPayloadLength(), pack->HasMarker());
session.DeletePacket(pack);
}
} while (session.GotoNextSourceWithData());
}
// session.EndDataAccess(); // useless without threading
}
void RTPSessionImpl::sendPacket(const SafeByteArray& data, int timestampinc, bool marker)
{
checkError(session.SendPacket((void*)(data.data()), data.size(), payloadType.getID(), marker, timestampinc));
poll();
}
void RTPSessionImpl::injectData(const SafeByteArray& data)
{
packetInjecter->InjectRTPorRTCP((void*)(data.data()), data.size(), *jRTPRemotePeer);
checkIncomingPackets();
poll();
}
void RTPSessionImpl::stop(int maxWaitMs)
{
session.BYEDestroy(jrtplib::RTPTime(0, maxWaitMs * 1000), "", 0);
udpSocket->close();
}
size_t RTPSessionImpl::getMaxRTPPayloadSize() const
{
jrtplib::RTPSessionParams sessparams;
return sessparams.GetMaximumPacketSize();
}
void RTPSessionImpl::checkError(int rtperr) const
{
if (rtperr < 0)
throw RTPException(jrtplib::RTPGetErrorString(rtperr));
}
void RTPSessionImpl::handleDataRead(boost::shared_ptr<SafeByteArray> data)
{
injectData(*data);
}
jrtplib::RTPAddress* RTPSessionImpl::nativeAddressToJRTPAddress(const HostAddressPort& hostAddressPort)
{
jrtplib::RTPAddress* jrtpAddress = 0;
std::string ipAddress = hostAddressPort.getAddress().toString();
uint16_t port = boost::numeric_cast<uint16_t>(hostAddressPort.getPort());
if (hostAddressPort.getAddress().getRawAddress().is_v4()) {
// Split address
std::vector<std::string> subStrings;
boost::algorithm::split(subStrings, ipAddress, boost::is_any_of("."));
// Cast sub strings array to array of byte
uint8_t ipNumbers[4];
for (int i = 0; i < std::min(4, (int)subStrings.size()); ++i)
ipNumbers[i] = boost::numeric_cast<uint8_t>(boost::lexical_cast<int>(subStrings[i]));
jrtpAddress = new jrtplib::RTPIPv4Address(ipNumbers, port);
}
else if (hostAddressPort.getAddress().getRawAddress().is_v6()) {
in6_addr addr;
inet_pton(AF_INET6, ipAddress.c_str(), &addr);
jrtpAddress = new jrtplib::RTPIPv6Address(addr, port);
}
return jrtpAddress;
}
}
|
Swift