blob: 129b5e704ae1107d0d03decf8c91d6729747de1d [file] [log] [blame]
* 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.
#include <map>
#include <vector>
#include "webrtc/modules/include/module_common_types.h"
#include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h"
#include "webrtc/rtc_base/criticalsection.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 {
RemoteEstimatorProxy(const Clock* clock, PacketRouter* packet_router);
virtual ~RemoteEstimatorProxy();
void IncomingPacket(int64_t arrival_time_ms,
size_t payload_size,
const RTPHeader& header) override;
void RemoveStream(uint32_t ssrc) override {}
bool LatestEstimate(std::vector<unsigned int>* ssrcs,
unsigned int* bitrate_bps) 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;
void Process() override;
void OnBitrateChanged(int bitrate);
static const int kMinSendIntervalMs;
static const int kMaxSendIntervalMs;
static const int kDefaultSendIntervalMs;
static const int kBackWindowMs;
void OnPacketArrival(uint16_t sequence_number, int64_t arrival_time)
bool BuildFeedbackPacket(rtcp::TransportFeedback* feedback_packet);
const Clock* const clock_;
PacketRouter* const packet_router_;
int64_t last_process_time_ms_;
rtc::CriticalSection lock_;
uint32_t media_ssrc_ RTC_GUARDED_BY(&lock_);
uint8_t feedback_sequence_ RTC_GUARDED_BY(&lock_);
SequenceNumberUnwrapper unwrapper_ RTC_GUARDED_BY(&lock_);
int64_t window_start_seq_ RTC_GUARDED_BY(&lock_);
// Map unwrapped seq -> time.
std::map<int64_t, int64_t> packet_arrival_times_ RTC_GUARDED_BY(&lock_);
int64_t send_interval_ms_ RTC_GUARDED_BY(&lock_);
} // namespace webrtc