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/*
* Copyright (c) 2017 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 CALL_SSRC_BINDING_OBSERVER_H_
#define CALL_SSRC_BINDING_OBSERVER_H_
#include <string>
namespace webrtc {
// With newer versions of SDP, SSRC is often not explicitly signaled and must
// be learned on the fly. This happens by correlating packet SSRCs with included
// RTP extension headers like MID and RSID, or by receiving information from
// RTCP messages.
// SsrcBindingObservers will be notified when a new binding is learned, which
// can happen during call setup and/or during the call.
class SsrcBindingObserver {
public:
virtual ~SsrcBindingObserver() = default;
virtual void OnSsrcBoundToRsid(const std::string& rsid, uint32_t ssrc) {}
virtual void OnSsrcBoundToMid(const std::string& mid, uint32_t ssrc) {}
virtual void OnSsrcBoundToMidRsid(const std::string& mid,
const std::string& rsid,
uint32_t ssrc) {}
virtual void OnSsrcBoundToPayloadType(uint8_t payload_type, uint32_t ssrc) {}
};
} // namespace webrtc
#endif // CALL_SSRC_BINDING_OBSERVER_H_
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