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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.
#ifndef MODULES_REMOTE_BITRATE_ESTIMATOR_INCLUDE_REMOTE_BITRATE_ESTIMATOR_H_
#define MODULES_REMOTE_BITRATE_ESTIMATOR_INCLUDE_REMOTE_BITRATE_ESTIMATOR_H_
#include <map>
#include <memory>
#include <vector>
#include "modules/include/module.h"
#include "modules/include/module_common_types.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "modules/rtp_rtcp/source/rtcp_packet.h"
namespace webrtc {
class Clock;
// RemoteBitrateObserver is used to signal changes in bitrate estimates for
// the incoming streams.
class RemoteBitrateObserver {
public:
// 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 TransportFeedbackSenderInterface {
public:
virtual ~TransportFeedbackSenderInterface() = default;
virtual bool SendCombinedRtcpPacket(
std::vector<std::unique_ptr<rtcp::RtcpPacket>> packets) = 0;
};
// TODO(holmer): Remove when all implementations have been updated.
struct ReceiveBandwidthEstimatorStats {};
class RemoteBitrateEstimator : public CallStatsObserver, public Module {
public:
~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. Note that |payload_size| is the
// packet size excluding headers.
// Note that |arrival_time_ms| can be of an arbitrary time base.
virtual void IncomingPacket(int64_t arrival_time_ms,
size_t payload_size,
const RTPHeader& header) = 0;
// Removes all data for |ssrc|.
virtual void RemoveStream(uint32_t ssrc) = 0;
// Returns true if a valid estimate exists and sets |bitrate_bps| to the
// estimated payload bitrate in bits per second. |ssrcs| is the list of ssrcs
// currently being received and of which the bitrate estimate is based upon.
virtual bool LatestEstimate(std::vector<uint32_t>* ssrcs,
uint32_t* bitrate_bps) const = 0;
// TODO(holmer): Remove when all implementations have been updated.
virtual bool GetStats(ReceiveBandwidthEstimatorStats* output) const;
virtual void SetMinBitrate(int min_bitrate_bps) = 0;
protected:
static const int64_t kProcessIntervalMs = 500;
static const int64_t kStreamTimeOutMs = 2000;
};
inline bool RemoteBitrateEstimator::GetStats(
ReceiveBandwidthEstimatorStats* output) const {
return false;
}
} // namespace webrtc
#endif // MODULES_REMOTE_BITRATE_ESTIMATOR_INCLUDE_REMOTE_BITRATE_ESTIMATOR_H_
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