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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_SDP_STATE_PROVIDER_H_
#define PC_SDP_STATE_PROVIDER_H_
#include <string>
#include "api/jsep.h"
#include "api/peer_connection_interface.h"
namespace webrtc {
// This interface provides access to the state of an SDP offer/answer
// negotiation.
//
// All the functions are const, so using this interface serves as
// assurance that the user is not modifying the state.
class SdpStateProvider {
public:
virtual ~SdpStateProvider() {}
virtual PeerConnectionInterface::SignalingState signaling_state() const = 0;
virtual const SessionDescriptionInterface* local_description() const = 0;
virtual const SessionDescriptionInterface* remote_description() const = 0;
virtual const SessionDescriptionInterface* current_local_description()
const = 0;
virtual const SessionDescriptionInterface* current_remote_description()
const = 0;
virtual const SessionDescriptionInterface* pending_local_description()
const = 0;
virtual const SessionDescriptionInterface* pending_remote_description()
const = 0;
// Whether an ICE restart has been asked for. Used in CreateOffer.
virtual bool NeedsIceRestart(const std::string& content_name) const = 0;
// Whether an ICE restart was indicated in the remote offer.
// Used in CreateAnswer.
virtual bool IceRestartPending(const std::string& content_name) const = 0;
virtual std::optional<SSLRole> GetDtlsRole(const std::string& mid) const = 0;
};
} // namespace webrtc
#endif // PC_SDP_STATE_PROVIDER_H_
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