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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 <map>
#include "webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h"
#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
namespace webrtc {
class RtcpBandwidthObserverImpl;
class BitrateControllerImpl : public BitrateController {
public:
friend class RtcpBandwidthObserverImpl;
explicit BitrateControllerImpl();
virtual ~BitrateControllerImpl();
virtual bool AvailableBandwidth(uint32_t* bandwidth) const OVERRIDE;
virtual RtcpBandwidthObserver* CreateRtcpBandwidthObserver() OVERRIDE;
virtual void SetBitrateObserver(BitrateObserver* observer,
const uint32_t start_bitrate,
const uint32_t min_bitrate,
const uint32_t max_bitrate) OVERRIDE;
virtual void RemoveBitrateObserver(BitrateObserver* observer) OVERRIDE;
protected:
struct BitrateConfiguration {
BitrateConfiguration(uint32_t start_bitrate,
uint32_t min_bitrate,
uint32_t max_bitrate)
: start_bitrate_(start_bitrate),
min_bitrate_(min_bitrate),
max_bitrate_(max_bitrate) {
}
uint32_t start_bitrate_;
uint32_t min_bitrate_;
uint32_t max_bitrate_;
};
struct ObserverConfiguration {
ObserverConfiguration(BitrateObserver* observer,
uint32_t bitrate)
: observer_(observer),
min_bitrate_(bitrate) {
}
BitrateObserver* observer_;
uint32_t min_bitrate_;
};
// Called by BitrateObserver's direct from the RTCP module.
void OnReceivedEstimatedBitrate(const uint32_t bitrate);
void OnReceivedRtcpReceiverReport(const uint8_t fraction_loss,
const uint32_t rtt,
const int number_of_packets,
const uint32_t now_ms);
private:
typedef std::multimap<uint32_t, ObserverConfiguration*> ObserverSortingMap;
typedef std::pair<BitrateObserver*, BitrateConfiguration*>
BitrateObserverConfiguration;
typedef std::list<BitrateObserverConfiguration> BitrateObserverConfList;
BitrateObserverConfList::iterator
FindObserverConfigurationPair(const BitrateObserver* observer);
void OnNetworkChanged(const uint32_t bitrate,
const uint8_t fraction_loss, // 0 - 255.
const uint32_t rtt);
CriticalSectionWrapper* critsect_;
SendSideBandwidthEstimation bandwidth_estimation_;
BitrateObserverConfList bitrate_observers_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_BITRATE_CONTROLLER_BITRATE_CONTROLLER_IMPL_H_
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