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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.
*/
#ifndef MODULES_RTP_RTCP_SOURCE_RTCP_RECEIVER_H_
#define MODULES_RTP_RTCP_SOURCE_RTCP_RECEIVER_H_
#include <map>
#include <set>
#include <string>
#include <vector>
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "modules/rtp_rtcp/source/rtcp_nack_stats.h"
#include "modules/rtp_rtcp/source/rtcp_packet/dlrr.h"
#include "rtc_base/criticalsection.h"
#include "rtc_base/thread_annotations.h"
#include "system_wrappers/include/ntp_time.h"
#include "typedefs.h" // NOLINT(build/include)
namespace webrtc {
class VideoBitrateAllocationObserver;
namespace rtcp {
class CommonHeader;
class ReportBlock;
class Rrtr;
class TargetBitrate;
class TmmbItem;
} // namespace rtcp
class RTCPReceiver {
public:
class ModuleRtpRtcp {
public:
virtual void SetTmmbn(std::vector<rtcp::TmmbItem> bounding_set) = 0;
virtual void OnRequestSendReport() = 0;
virtual void OnReceivedNack(
const std::vector<uint16_t>& nack_sequence_numbers) = 0;
virtual void OnReceivedRtcpReportBlocks(
const ReportBlockList& report_blocks) = 0;
virtual bool GetSendReportMetadata(const uint32_t send_report,
uint64_t *time_of_send,
uint32_t *packet_count,
uint64_t *octet_count) = 0;
protected:
virtual ~ModuleRtpRtcp() = default;
};
RTCPReceiver(Clock* clock,
bool receiver_only,
RtcpPacketTypeCounterObserver* packet_type_counter_observer,
RtcpBandwidthObserver* rtcp_bandwidth_observer,
RtcpEventObserver* rtcp_event_observer,
RtcpIntraFrameObserver* rtcp_intra_frame_observer,
TransportFeedbackObserver* transport_feedback_observer,
VideoBitrateAllocationObserver* bitrate_allocation_observer,
ModuleRtpRtcp* owner);
virtual ~RTCPReceiver();
void IncomingPacket(const uint8_t* packet, size_t packet_size);
int64_t LastReceivedReportBlockMs() const;
void SetSsrcs(uint32_t main_ssrc, const std::set<uint32_t>& registered_ssrcs);
void SetRemoteSSRC(uint32_t ssrc);
uint32_t RemoteSSRC() const;
// Get received cname.
int32_t CNAME(uint32_t remote_ssrc, char cname[RTCP_CNAME_SIZE]) const;
// Get received NTP.
bool NTP(uint32_t* received_ntp_secs,
uint32_t* received_ntp_frac,
uint32_t* rtcp_arrival_time_secs,
uint32_t* rtcp_arrival_time_frac,
uint32_t* rtcp_timestamp) const;
// Get received sender packet and octet counts
void RemoteRTCPSenderInfo(uint32_t* packet_count,
uint32_t* octet_count,
NtpTime* ntp_timestamp) const;
bool LastReceivedXrReferenceTimeInfo(rtcp::ReceiveTimeInfo* info) const;
// Get rtt.
int32_t RTT(uint32_t remote_ssrc,
int64_t* last_rtt_ms,
int64_t* avg_rtt_ms,
int64_t* min_rtt_ms,
int64_t* max_rtt_ms) const;
void SetRtcpXrRrtrStatus(bool enable);
bool GetAndResetXrRrRtt(int64_t* rtt_ms);
// Get statistics.
int32_t StatisticsReceived(std::vector<RTCPReportBlock>* receiveBlocks) const;
// Returns true if we haven't received an RTCP RR for several RTCP
// intervals, but only triggers true once.
bool RtcpRrTimeout(int64_t rtcp_interval_ms);
// Returns true if we haven't received an RTCP RR telling the receive side
// has not received RTP packets for too long, i.e. extended highest sequence
// number hasn't increased for several RTCP intervals. The function only
// returns true once until a new RR is received.
bool RtcpRrSequenceNumberTimeout(int64_t rtcp_interval_ms);
std::vector<rtcp::TmmbItem> TmmbrReceived();
// Return true if new bandwidth should be set.
bool UpdateTmmbrTimers();
std::vector<rtcp::TmmbItem> BoundingSet(bool* tmmbr_owner);
// Set new bandwidth and notify remote clients about it.
void NotifyTmmbrUpdated();
void RegisterRtcpStatisticsCallback(RtcpStatisticsCallback* callback);
RtcpStatisticsCallback* GetRtcpStatisticsCallback();
private:
struct PacketInformation;
struct TmmbrInformation;
struct ReportBlockWithRtt;
struct LastFirStatus;
// RTCP report blocks mapped by remote SSRC.
using ReportBlockInfoMap = std::map<uint32_t, ReportBlockWithRtt>;
// RTCP report blocks map mapped by source SSRC.
using ReportBlockMap = std::map<uint32_t, ReportBlockInfoMap>;
bool ParseCompoundPacket(const uint8_t* packet_begin,
const uint8_t* packet_end,
PacketInformation* packet_information);
void TriggerCallbacksFromRtcpPacket(
const PacketInformation& packet_information);
TmmbrInformation* FindOrCreateTmmbrInfo(uint32_t remote_ssrc)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
// Update TmmbrInformation (if present) is alive.
void UpdateTmmbrRemoteIsAlive(uint32_t remote_ssrc)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
TmmbrInformation* GetTmmbrInformation(uint32_t remote_ssrc)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleSenderReport(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleReceiverReport(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleReportBlock(const rtcp::ReportBlock& report_block,
PacketInformation* packet_information,
uint32_t remote_ssrc)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleSdes(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleXr(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleXrReceiveReferenceTime(uint32_t sender_ssrc,
const rtcp::Rrtr& rrtr)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleXrDlrrReportBlock(const rtcp::ReceiveTimeInfo& rti)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleXrTargetBitrate(uint32_t ssrc,
const rtcp::TargetBitrate& target_bitrate,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleNack(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleBye(const rtcp::CommonHeader& rtcp_block)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandlePli(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandlePsfbApp(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleTmmbr(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleTmmbn(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleSrReq(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleFir(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
void HandleTransportFeedback(const rtcp::CommonHeader& rtcp_block,
PacketInformation* packet_information)
RTC_EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
Clock* const clock_;
const bool receiver_only_;
ModuleRtpRtcp* const rtp_rtcp_;
rtc::CriticalSection feedbacks_lock_;
RtcpBandwidthObserver* const rtcp_bandwidth_observer_;
RtcpEventObserver* const rtcp_event_observer_;
RtcpIntraFrameObserver* const rtcp_intra_frame_observer_;
TransportFeedbackObserver* const transport_feedback_observer_;
VideoBitrateAllocationObserver* const bitrate_allocation_observer_;
rtc::CriticalSection rtcp_receiver_lock_;
uint32_t main_ssrc_ RTC_GUARDED_BY(rtcp_receiver_lock_);
uint32_t remote_ssrc_ RTC_GUARDED_BY(rtcp_receiver_lock_);
std::set<uint32_t> registered_ssrcs_ RTC_GUARDED_BY(rtcp_receiver_lock_);
// Received sender report.
NtpTime remote_sender_ntp_time_ RTC_GUARDED_BY(rtcp_receiver_lock_);
uint32_t remote_sender_rtp_time_ RTC_GUARDED_BY(rtcp_receiver_lock_);
uint32_t remote_sender_packet_count_ RTC_GUARDED_BY(rtcp_receiver_lock_);
uint32_t remote_sender_octet_count_ RTC_GUARDED_BY(rtcp_receiver_lock_);
// When did we receive the last send report.
NtpTime last_received_sr_ntp_ RTC_GUARDED_BY(rtcp_receiver_lock_);
// Received XR receive time report.
rtcp::ReceiveTimeInfo remote_time_info_;
// Time when the report was received.
NtpTime last_received_xr_ntp_;
// Estimated rtt, zero when there is no valid estimate.
bool xr_rrtr_status_ RTC_GUARDED_BY(rtcp_receiver_lock_);
int64_t xr_rr_rtt_ms_;
int64_t oldest_tmmbr_info_ms_ RTC_GUARDED_BY(rtcp_receiver_lock_);
// Mapped by remote ssrc.
std::map<uint32_t, TmmbrInformation> tmmbr_infos_
RTC_GUARDED_BY(rtcp_receiver_lock_);
ReportBlockMap received_report_blocks_ RTC_GUARDED_BY(rtcp_receiver_lock_);
std::map<uint32_t, LastFirStatus> last_fir_
RTC_GUARDED_BY(rtcp_receiver_lock_);
std::map<uint32_t, std::string> received_cnames_
RTC_GUARDED_BY(rtcp_receiver_lock_);
// The last time we received an RTCP Report block for this module.
int64_t last_received_rb_ms_ RTC_GUARDED_BY(rtcp_receiver_lock_);
// The time we last received an RTCP RR telling we have successfully
// delivered RTP packet to the remote side.
int64_t last_increased_sequence_number_ms_;
RtcpStatisticsCallback* stats_callback_ RTC_GUARDED_BY(feedbacks_lock_);
RtcpPacketTypeCounterObserver* const packet_type_counter_observer_;
RtcpPacketTypeCounter packet_type_counter_;
RtcpNackStats nack_stats_;
size_t num_skipped_packets_;
int64_t last_skipped_packets_warning_ms_;
};
} // namespace webrtc
#endif // MODULES_RTP_RTCP_SOURCE_RTCP_RECEIVER_H_
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