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/*
* Copyright (c) 2015 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 WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_REMOTE_ESTIMATOR_PROXY_H_
#define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_REMOTE_ESTIMATOR_PROXY_H_
#include <map>
#include <vector>
#include "webrtc/base/criticalsection.h"
#include "webrtc/modules/interface/module_common_types.h"
#include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h"
namespace webrtc {
class Clock;
class PacketRouter;
namespace rtcp {
class TransportFeedback;
}
// Class used when send-side BWE is enabled: This proxy is instantiated on the
// receive side. It buffers a number of receive timestamps and then sends
// transport feedback messages back too the send side.
class RemoteEstimatorProxy : public RemoteBitrateEstimator {
public:
RemoteEstimatorProxy(Clock* clock, PacketRouter* packet_router);
virtual ~RemoteEstimatorProxy();
void IncomingPacketFeedbackVector(
const std::vector<PacketInfo>& packet_feedback_vector) override;
void IncomingPacket(int64_t arrival_time_ms,
size_t payload_size,
const RTPHeader& header,
bool was_paced) override;
void RemoveStream(unsigned int ssrc) override;
bool LatestEstimate(std::vector<unsigned int>* ssrcs,
unsigned int* bitrate_bps) const override;
bool GetStats(ReceiveBandwidthEstimatorStats* output) const override;
void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override {}
void SetMinBitrate(int min_bitrate_bps) override {}
int64_t TimeUntilNextProcess() override;
int32_t Process() override;
static const int kDefaultProcessIntervalMs;
static const int kBackWindowMs;
private:
void OnPacketArrival(uint16_t sequence_number, int64_t arrival_time)
EXCLUSIVE_LOCKS_REQUIRED(&lock_);
bool BuildFeedbackPacket(rtcp::TransportFeedback* feedback_packetket);
Clock* const clock_;
PacketRouter* const packet_router_;
int64_t last_process_time_ms_;
rtc::CriticalSection lock_;
uint32_t media_ssrc_ GUARDED_BY(&lock_);
uint8_t feedback_sequence_ GUARDED_BY(&lock_);
SequenceNumberUnwrapper unwrapper_ GUARDED_BY(&lock_);
int64_t window_start_seq_ GUARDED_BY(&lock_);
// Map unwrapped seq -> time.
std::map<int64_t, int64_t> packet_arrival_times_ GUARDED_BY(&lock_);
};
} // namespace webrtc
#endif // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_REMOTE_ESTIMATOR_PROXY_H_
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