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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
* Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
* Copyright (C) 2015 Ericsson AB. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Google Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(MEDIA_STREAM)
#include "RTCPeerConnection.h"
#include "DOMError.h"
#include "Document.h"
#include "Event.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "JSDOMError.h"
#include "MediaStream.h"
#include "MediaStreamTrack.h"
#include "RTCConfiguration.h"
#include "RTCDataChannel.h"
#include "RTCIceCandidate.h"
#include "RTCIceCandidateEvent.h"
#include "RTCOfferAnswerOptions.h"
#include "RTCSessionDescription.h"
#include "RTCTrackEvent.h"
#include <wtf/MainThread.h>
#include <wtf/text/Base64.h>
namespace WebCore {
using namespace PeerConnection;
using namespace PeerConnectionStates;
RefPtr<RTCPeerConnection> RTCPeerConnection::create(ScriptExecutionContext& context, const Dictionary& rtcConfiguration, ExceptionCode& ec)
{
RefPtr<RTCConfiguration> configuration = RTCConfiguration::create(rtcConfiguration, ec);
if (ec)
return nullptr;
RefPtr<RTCPeerConnection> peerConnection = adoptRef(new RTCPeerConnection(context, WTFMove(configuration), ec));
peerConnection->suspendIfNeeded();
if (ec)
return nullptr;
return peerConnection;
}
RTCPeerConnection::RTCPeerConnection(ScriptExecutionContext& context, RefPtr<RTCConfiguration>&& configuration, ExceptionCode& ec)
: ActiveDOMObject(&context)
, m_signalingState(SignalingState::Stable)
, m_iceGatheringState(IceGatheringState::New)
, m_iceConnectionState(IceConnectionState::New)
, m_configuration(WTFMove(configuration))
, m_stopped(false)
{
Document& document = downcast<Document>(context);
if (!document.frame()) {
ec = NOT_SUPPORTED_ERR;
return;
}
m_backend = PeerConnectionBackend::create(this);
if (!m_backend) {
ec = NOT_SUPPORTED_ERR;
return;
}
m_backend->setConfiguration(*m_configuration);
}
RTCPeerConnection::~RTCPeerConnection()
{
stop();
}
RefPtr<RTCRtpSender> RTCPeerConnection::addTrack(RefPtr<MediaStreamTrack>&& track, Vector<MediaStream*> streams, ExceptionCode& ec)
{
if (!track) {
ec = TypeError;
return nullptr;
}
if (m_signalingState == SignalingState::Closed) {
ec = INVALID_STATE_ERR;
return nullptr;
}
// Require at least one stream until https://github.com/w3c/webrtc-pc/issues/288 is resolved
if (!streams.size()) {
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
for (auto& sender : m_senderSet) {
if (sender->trackId() == track->id()) {
// FIXME: Spec says InvalidParameter
ec = INVALID_MODIFICATION_ERR;
return nullptr;
}
}
Vector<String> mediaStreamIds;
for (auto stream : streams)
mediaStreamIds.append(stream->id());
RefPtr<RTCRtpSender> sender = RTCRtpSender::create(WTFMove(track), WTFMove(mediaStreamIds), *this);
m_senderSet.append(sender);
m_backend->markAsNeedingNegotiation();
return sender;
}
void RTCPeerConnection::removeTrack(RTCRtpSender* sender, ExceptionCode& ec)
{
if (!sender) {
ec = TypeError;
return;
}
if (m_signalingState == SignalingState::Closed) {
ec = INVALID_STATE_ERR;
return;
}
if (!m_senderSet.contains(sender))
return;
sender->stop();
m_backend->markAsNeedingNegotiation();
}
void RTCPeerConnection::queuedCreateOffer(const Dictionary& offerOptions, SessionDescriptionPromise&& promise)
{
if (m_signalingState == SignalingState::Closed) {
promise.reject(DOMError::create("InvalidStateError"));
return;
}
ExceptionCode ec = 0;
RefPtr<RTCOfferOptions> options = RTCOfferOptions::create(offerOptions, ec);
if (ec) {
promise.reject(DOMError::create("Invalid createOffer argument"));
return;
}
ASSERT(options);
m_backend->createOffer(*options, WTFMove(promise));
}
void RTCPeerConnection::queuedCreateAnswer(const Dictionary& answerOptions, SessionDescriptionPromise&& promise)
{
if (m_signalingState == SignalingState::Closed) {
promise.reject(DOMError::create("InvalidStateError"));
return;
}
ExceptionCode ec = 0;
RefPtr<RTCAnswerOptions> options = RTCAnswerOptions::create(answerOptions, ec);
if (ec) {
promise.reject(DOMError::create("Invalid createAnswer argument"));
return;
}
m_backend->createAnswer(*options, WTFMove(promise));
}
void RTCPeerConnection::queuedSetLocalDescription(RTCSessionDescription* description, PeerConnection::VoidPromise&& promise)
{
if (m_signalingState == SignalingState::Closed) {
promise.reject(DOMError::create("InvalidStateError"));
return;
}
ASSERT(description);
m_backend->setLocalDescription(*description, WTFMove(promise));
}
RefPtr<RTCSessionDescription> RTCPeerConnection::localDescription() const
{
return m_backend->localDescription();
}
RefPtr<RTCSessionDescription> RTCPeerConnection::currentLocalDescription() const
{
return m_backend->currentLocalDescription();
}
RefPtr<RTCSessionDescription> RTCPeerConnection::pendingLocalDescription() const
{
return m_backend->pendingLocalDescription();
}
void RTCPeerConnection::queuedSetRemoteDescription(RTCSessionDescription* description, PeerConnection::VoidPromise&& promise)
{
if (m_signalingState == SignalingState::Closed) {
promise.reject(DOMError::create("InvalidStateError"));
return;
}
ASSERT(description);
m_backend->setRemoteDescription(*description, WTFMove(promise));
}
RefPtr<RTCSessionDescription> RTCPeerConnection::remoteDescription() const
{
return m_backend->remoteDescription();
}
RefPtr<RTCSessionDescription> RTCPeerConnection::currentRemoteDescription() const
{
return m_backend->currentRemoteDescription();
}
RefPtr<RTCSessionDescription> RTCPeerConnection::pendingRemoteDescription() const
{
return m_backend->pendingRemoteDescription();
}
void RTCPeerConnection::queuedAddIceCandidate(RTCIceCandidate* rtcCandidate, VoidPromise&& promise)
{
if (m_signalingState == SignalingState::Closed) {
promise.reject(DOMError::create("InvalidStateError"));
return;
}
ASSERT(rtcCandidate);
m_backend->addIceCandidate(*rtcCandidate, WTFMove(promise));
}
String RTCPeerConnection::signalingState() const
{
switch (m_signalingState) {
case SignalingState::Stable:
return ASCIILiteral("stable");
case SignalingState::HaveLocalOffer:
return ASCIILiteral("have-local-offer");
case SignalingState::HaveRemoteOffer:
return ASCIILiteral("have-remote-offer");
case SignalingState::HaveLocalPrAnswer:
return ASCIILiteral("have-local-pranswer");
case SignalingState::HaveRemotePrAnswer:
return ASCIILiteral("have-remote-pranswer");
case SignalingState::Closed:
return ASCIILiteral("closed");
}
ASSERT_NOT_REACHED();
return String();
}
String RTCPeerConnection::iceGatheringState() const
{
switch (m_iceGatheringState) {
case IceGatheringState::New:
return ASCIILiteral("new");
case IceGatheringState::Gathering:
return ASCIILiteral("gathering");
case IceGatheringState::Complete:
return ASCIILiteral("complete");
}
ASSERT_NOT_REACHED();
return String();
}
String RTCPeerConnection::iceConnectionState() const
{
switch (m_iceConnectionState) {
case IceConnectionState::New:
return ASCIILiteral("new");
case IceConnectionState::Checking:
return ASCIILiteral("checking");
case IceConnectionState::Connected:
return ASCIILiteral("connected");
case IceConnectionState::Completed:
return ASCIILiteral("completed");
case IceConnectionState::Failed:
return ASCIILiteral("failed");
case IceConnectionState::Disconnected:
return ASCIILiteral("disconnected");
case IceConnectionState::Closed:
return ASCIILiteral("closed");
}
ASSERT_NOT_REACHED();
return String();
}
RTCConfiguration* RTCPeerConnection::getConfiguration() const
{
return m_configuration.get();
}
void RTCPeerConnection::setConfiguration(const Dictionary& configuration, ExceptionCode& ec)
{
if (configuration.isUndefinedOrNull()) {
ec = TypeError;
return;
}
if (m_signalingState == SignalingState::Closed) {
ec = INVALID_STATE_ERR;
return;
}
RefPtr<RTCConfiguration> newConfiguration = RTCConfiguration::create(configuration, ec);
if (ec)
return;
m_configuration = WTFMove(newConfiguration);
m_backend->setConfiguration(*m_configuration);
}
void RTCPeerConnection::privateGetStats(MediaStreamTrack* selector, PeerConnection::StatsPromise&& promise)
{
m_backend->getStats(selector, WTFMove(promise));
}
void RTCPeerConnection::privateGetStats(PeerConnection::StatsPromise&& promise)
{
privateGetStats(nullptr, WTFMove(promise));
}
RefPtr<RTCDataChannel> RTCPeerConnection::createDataChannel(String, const Dictionary&, ExceptionCode& ec)
{
if (m_signalingState == SignalingState::Closed) {
ec = INVALID_STATE_ERR;
return nullptr;
}
return nullptr;
}
void RTCPeerConnection::close()
{
if (m_signalingState == SignalingState::Closed)
return;
m_signalingState = SignalingState::Closed;
}
void RTCPeerConnection::stop()
{
if (m_stopped)
return;
m_stopped = true;
m_iceConnectionState = IceConnectionState::Closed;
m_signalingState = SignalingState::Closed;
}
const char* RTCPeerConnection::activeDOMObjectName() const
{
return "RTCPeerConnection";
}
bool RTCPeerConnection::canSuspendForDocumentSuspension() const
{
// FIXME: We should try and do better here.
return false;
}
void RTCPeerConnection::setSignalingState(SignalingState newState)
{
m_signalingState = newState;
}
void RTCPeerConnection::updateIceGatheringState(IceGatheringState newState)
{
scriptExecutionContext()->postTask([=](ScriptExecutionContext&) {
m_iceGatheringState = newState;
dispatchEvent(Event::create(eventNames().icegatheringstatechangeEvent, false, false));
});
}
void RTCPeerConnection::updateIceConnectionState(IceConnectionState newState)
{
scriptExecutionContext()->postTask([=](ScriptExecutionContext&) {
m_iceConnectionState = newState;
dispatchEvent(Event::create(eventNames().iceconnectionstatechangeEvent, false, false));
});
}
void RTCPeerConnection::scheduleNegotiationNeededEvent()
{
scriptExecutionContext()->postTask([=](ScriptExecutionContext&) {
if (m_backend->isNegotiationNeeded()) {
dispatchEvent(Event::create(eventNames().negotiationneededEvent, false, false));
m_backend->clearNegotiationNeededState();
}
});
}
void RTCPeerConnection::fireEvent(Event& event)
{
dispatchEvent(event);
}
void RTCPeerConnection::replaceTrack(RTCRtpSender& sender, MediaStreamTrack& withTrack, PeerConnection::VoidPromise&& promise)
{
m_backend->replaceTrack(sender, withTrack, WTFMove(promise));
}
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)