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* Copyright (c) 2012 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.
// This class estimates the incoming available bandwidth.
#include <cstdint>
#include <vector>
#include "api/units/data_rate.h"
#include "api/units/time_delta.h"
#include "modules/include/module_common_types.h"
#include "modules/rtp_rtcp/source/rtp_packet_received.h"
namespace webrtc {
class Clock;
// RemoteBitrateObserver is used to signal changes in bitrate estimates for
// the incoming streams.
class RemoteBitrateObserver {
// Called when a receive channel group has a new bitrate estimate for the
// incoming streams.
virtual void OnReceiveBitrateChanged(const std::vector<uint32_t>& ssrcs,
uint32_t bitrate) = 0;
virtual ~RemoteBitrateObserver() {}
class RemoteBitrateEstimator : public CallStatsObserver {
~RemoteBitrateEstimator() override {}
// Called for each incoming packet. Updates the incoming payload bitrate
// estimate and the over-use detector. If an over-use is detected the
// remote bitrate estimate will be updated.
virtual void IncomingPacket(const RtpPacketReceived& rtp_packet) = 0;
// Removes all data for `ssrc`.
virtual void RemoveStream(uint32_t ssrc) = 0;
// Returns latest estimate or DataRate::Zero() if estimation is unavailable.
virtual DataRate LatestEstimate() const = 0;
virtual TimeDelta Process() = 0;
static constexpr TimeDelta kProcessInterval = TimeDelta::Millis(500);
static constexpr TimeDelta kStreamTimeOut = TimeDelta::Seconds(2);
} // namespace webrtc