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/*
* Copyright (c) 2012 Yoann Blein
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
#include <Swiften/ScreenSharing/OutgoingScreenSharing.h>
#include <Swiften/Base/Algorithm.h>
#include <Swiften/Elements/JinglePayload.h>
#include <Swiften/Elements/JingleRawUDPTransportPayload.h>
#include <Swiften/Elements/JingleRTPDescription.h>
#include <Swiften/Jingle/JingleSession.h>
#include <Swiften/Network/UDPSocket.h>
#include <Swiften/Network/TimerFactory.h>
#include <Swiften/Network/Timer.h>
#include <Swiften/ScreenSharing/RTPSessionImpl.h>
#include <Swiften/ScreenSharing/VP8Encoder.h>
#include <Swiften/ScreenSharing/VP8RTPPacketizer.h>
#include <Swiften/ScreenSharing/Image.h>
#include <boost/bind.hpp>
namespace Swift {
OutgoingScreenSharing::OutgoingScreenSharing(boost::shared_ptr<JingleSession> session, UDPSocketFactory* udpSocketFactory, TimerFactory* timerFactory)
: ScreenSharing(session, udpSocketFactory),
timerFactory(timerFactory), contentID(JingleContentID(idGenerator.generateID(), JingleContentPayload::InitiatorCreator)),
canceled(false), sessionAccepted(false), socketConnected(false), encoder(0), packetizer(0)
{
jingleSession->onSessionAcceptReceived.connect(boost::bind(&OutgoingScreenSharing::handleSessionAcceptReceived, this, _1, _2, _3));
}
OutgoingScreenSharing::~OutgoingScreenSharing()
{
jingleSession->onSessionAcceptReceived.disconnect(boost::bind(&OutgoingScreenSharing::handleSessionAcceptReceived, this, _1, _2, _3));
delete rtpSession;
delete encoder;
delete packetizer;
}
void OutgoingScreenSharing::cancel()
{
canceled = true;
jingleSession->sendTerminate(JinglePayload::Reason::Cancel);
onStateChange(ScreenSharing::Canceled);
}
void OutgoingScreenSharing::start(unsigned int width, unsigned int height)
{
//onStateChange(ScreenSharing::WaitingForStart);
this->width = width;
this->height = height;
JingleRTPDescription::ref desc = boost::make_shared<JingleRTPDescription>(JingleRTPDescription::Video);
payloadTypeUsed = RTPPayloadType(98, "VP8", 90000);
desc->addPayloadType(payloadTypeUsed);
JingleRawUDPTransportPayload::ref transport = boost::make_shared<JingleRawUDPTransportPayload>();
if (addBestCandidate(transport)) {
SWIFT_LOG(debug) << "Screen sharing: start" << std::endl;
jingleSession->sendInitiate(contentID, desc, transport);
serverSocket->onConnected.connect(boost::bind(&OutgoingScreenSharing::handleSocketConnected, this));
serverSocket->connectToFirstIncoming();
onStateChange(ScreenSharing::WaitingForAccept);
} else {
SWIFT_LOG(error) << "Screen sharing: Unable to listening on any interface" << std::endl;
onStateChange(ScreenSharing::Failed);
onFinished();
}
}
void OutgoingScreenSharing::addImage(const Image &image)
{
encoder->encodeImage(image);
}
void OutgoingScreenSharing::handleSocketConnected()
{
if (canceled)
return;
SWIFT_LOG(debug) << "Screen sharing: UDP socket connected" << std::endl;
serverSocket->onConnected.disconnect(boost::bind(&OutgoingScreenSharing::handleSocketConnected, this));
socketConnected = true;
if (sessionAccepted)
startRTPSession();
}
void OutgoingScreenSharing::handleSessionAcceptReceived(const JingleContentID& /*id*/, boost::shared_ptr<JingleDescription> /*desc*/, boost::shared_ptr<JingleTransportPayload> /*transport*/)
{
if (canceled)
return;
SWIFT_LOG(debug) << "Screen sharing: accepted" << std::endl;
// TODO: check desc and transport
sessionAccepted = true;
if (socketConnected) {
startRTPSession();
} else {
connectionTimer = timerFactory->createTimer(1000);
connectionTimer->onTick.connect(boost::bind(&OutgoingScreenSharing::handleConnectionFailed, this));
connectionTimer->start();
onStateChange(ScreenSharing::Connecting);
}
}
void OutgoingScreenSharing::handleConnectionFailed()
{
SWIFT_LOG(debug) << "Screen sharing: unable to connect" << std::endl;
connectionTimer->onTick.disconnect(boost::bind(&OutgoingScreenSharing::handleConnectionFailed, this));
jingleSession->sendTerminate(JinglePayload::Reason::ConnectivityError);
canceled = true;
onStateChange(ScreenSharing::Failed);
}
void OutgoingScreenSharing::startRTPSession()
{
SWIFT_LOG(debug) << "Screen sharing: accepted and connected, start sharing" << std::endl;
// Session accepted and socket connected, we can start the rtp session
rtpSession = new RTPSessionImpl(serverSocket, payloadTypeUsed);
if (payloadTypeUsed.getID() == 98 && payloadTypeUsed.getName() == "VP8") {
packetizer = new VP8RTPPacketizer;
encoder = new VP8Encoder(packetizer, width, height);
packetizer->onNewPayloadReady.connect(boost::bind(&OutgoingScreenSharing::handleNewPayloadReady, this, _1, _2));
onReady();
}
}
void OutgoingScreenSharing::handleNewPayloadReady(const std::vector<uint8_t>& data, bool marker)
{
SafeByteArray sba(data.begin(), data.end());
rtpSession->sendPacket(sba, 500, marker);
}
}
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Swift