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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.
*
* Usage: this class will register multiple RtcpBitrateObserver's one at each
* RTCP module. It will aggregate the results and run one bandwidth estimation
* and push the result to the encoder via VideoEncoderCallback.
*/
#ifndef WEBRTC_MODULES_BITRATE_CONTROLLER_BITRATE_CONTROLLER_IMPL_H_
#define WEBRTC_MODULES_BITRATE_CONTROLLER_BITRATE_CONTROLLER_IMPL_H_
#include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
#include <list>
#include <utility>
#include "webrtc/base/criticalsection.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h"
namespace webrtc {
class BitrateControllerImpl : public BitrateController {
public:
BitrateControllerImpl(Clock* clock, BitrateObserver* observer);
virtual ~BitrateControllerImpl() {}
bool AvailableBandwidth(uint32_t* bandwidth) const override;
RtcpBandwidthObserver* CreateRtcpBandwidthObserver() override;
void SetStartBitrate(int start_bitrate_bps) override;
void SetMinMaxBitrate(int min_bitrate_bps,
int max_bitrate_bps) override;
void SetReservedBitrate(uint32_t reserved_bitrate_bps) override;
int64_t TimeUntilNextProcess() override;
int32_t Process() override;
private:
class RtcpBandwidthObserverImpl;
// Called by BitrateObserver's direct from the RTCP module.
void OnReceivedEstimatedBitrate(uint32_t bitrate);
void OnReceivedRtcpReceiverReport(uint8_t fraction_loss,
int64_t rtt,
int number_of_packets,
int64_t now_ms);
void MaybeTriggerOnNetworkChanged();
// Returns true if the parameters have changed since the last call.
bool GetNetworkParameters(uint32_t* bitrate,
uint8_t* fraction_loss,
int64_t* rtt);
void OnNetworkChanged(uint32_t bitrate,
uint8_t fraction_loss, // 0 - 255.
int64_t rtt) EXCLUSIVE_LOCKS_REQUIRED(critsect_);
// Used by process thread.
Clock* clock_;
BitrateObserver* observer_;
int64_t last_bitrate_update_ms_;
mutable rtc::CriticalSection critsect_;
SendSideBandwidthEstimation bandwidth_estimation_ GUARDED_BY(critsect_);
uint32_t reserved_bitrate_bps_ GUARDED_BY(critsect_);
uint32_t last_bitrate_bps_ GUARDED_BY(critsect_);
uint8_t last_fraction_loss_ GUARDED_BY(critsect_);
int64_t last_rtt_ms_ GUARDED_BY(critsect_);
uint32_t last_reserved_bitrate_bps_ GUARDED_BY(critsect_);
RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(BitrateControllerImpl);
};
} // namespace webrtc
#endif // WEBRTC_MODULES_BITRATE_CONTROLLER_BITRATE_CONTROLLER_IMPL_H_
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