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/*
* Copyright 2020 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef PC_CONNECTION_CONTEXT_H_
#define PC_CONNECTION_CONTEXT_H_
#include <memory>
#include <string>
#include "api/call/call_factory_interface.h"
#include "api/media_stream_interface.h"
#include "api/peer_connection_interface.h"
#include "api/ref_counted_base.h"
#include "api/scoped_refptr.h"
#include "api/sequence_checker.h"
#include "api/transport/sctp_transport_factory_interface.h"
#include "api/transport/webrtc_key_value_config.h"
#include "media/base/media_engine.h"
#include "p2p/base/basic_packet_socket_factory.h"
#include "pc/channel_manager.h"
#include "rtc_base/checks.h"
#include "rtc_base/network.h"
#include "rtc_base/network_monitor_factory.h"
#include "rtc_base/rtc_certificate_generator.h"
#include "rtc_base/thread.h"
#include "rtc_base/thread_annotations.h"
namespace rtc {
class BasicNetworkManager;
class BasicPacketSocketFactory;
} // namespace rtc
namespace webrtc {
class RtcEventLog;
// This class contains resources needed by PeerConnection and associated
// objects. A reference to this object is passed to each PeerConnection. The
// methods on this object are assumed not to change the state in any way that
// interferes with the operation of other PeerConnections.
//
// This class must be created and destroyed on the signaling thread.
class ConnectionContext final
: public rtc::RefCountedNonVirtual<ConnectionContext> {
public:
// Creates a ConnectionContext. May return null if initialization fails.
// The Dependencies class allows simple management of all new dependencies
// being added to the ConnectionContext.
static rtc::scoped_refptr<ConnectionContext> Create(
PeerConnectionFactoryDependencies* dependencies);
// This class is not copyable or movable.
ConnectionContext(const ConnectionContext&) = delete;
ConnectionContext& operator=(const ConnectionContext&) = delete;
// Functions called from PeerConnection and friends
SctpTransportFactoryInterface* sctp_transport_factory() const {
return sctp_factory_.get();
}
cricket::ChannelManager* channel_manager() const;
rtc::Thread* signaling_thread() { return signaling_thread_; }
const rtc::Thread* signaling_thread() const { return signaling_thread_; }
rtc::Thread* worker_thread() { return worker_thread_; }
const rtc::Thread* worker_thread() const { return worker_thread_; }
rtc::Thread* network_thread() { return network_thread_; }
const rtc::Thread* network_thread() const { return network_thread_; }
const WebRtcKeyValueConfig& trials() const { return *trials_.get(); }
// Accessors only used from the PeerConnectionFactory class
rtc::BasicNetworkManager* default_network_manager() {
RTC_DCHECK_RUN_ON(signaling_thread_);
return default_network_manager_.get();
}
rtc::BasicPacketSocketFactory* default_socket_factory() {
RTC_DCHECK_RUN_ON(signaling_thread_);
return default_socket_factory_.get();
}
CallFactoryInterface* call_factory() {
RTC_DCHECK_RUN_ON(worker_thread_);
return call_factory_.get();
}
protected:
explicit ConnectionContext(PeerConnectionFactoryDependencies* dependencies);
friend class rtc::RefCountedNonVirtual<ConnectionContext>;
~ConnectionContext();
private:
// The following three variables are used to communicate between the
// constructor and the destructor, and are never exposed externally.
bool wraps_current_thread_;
// Note: Since owned_network_thread_ and owned_worker_thread_ are used
// in the initialization of network_thread_ and worker_thread_, they
// must be declared before them, so that they are initialized first.
std::unique_ptr<rtc::Thread> owned_network_thread_
RTC_GUARDED_BY(signaling_thread_);
std::unique_ptr<rtc::Thread> owned_worker_thread_
RTC_GUARDED_BY(signaling_thread_);
rtc::Thread* const network_thread_;
rtc::Thread* const worker_thread_;
rtc::Thread* const signaling_thread_;
// channel_manager is accessed both on signaling thread and worker thread.
std::unique_ptr<cricket::ChannelManager> channel_manager_;
std::unique_ptr<rtc::NetworkMonitorFactory> const network_monitor_factory_
RTC_GUARDED_BY(signaling_thread_);
std::unique_ptr<rtc::BasicNetworkManager> default_network_manager_
RTC_GUARDED_BY(signaling_thread_);
std::unique_ptr<webrtc::CallFactoryInterface> const call_factory_
RTC_GUARDED_BY(worker_thread_);
std::unique_ptr<rtc::BasicPacketSocketFactory> default_socket_factory_
RTC_GUARDED_BY(signaling_thread_);
std::unique_ptr<SctpTransportFactoryInterface> const sctp_factory_;
// Accessed both on signaling thread and worker thread.
std::unique_ptr<WebRtcKeyValueConfig> const trials_;
};
} // namespace webrtc
#endif // PC_CONNECTION_CONTEXT_H_
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