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webrtc/modules/rtp_rtcp/source/rtcp_sender.h
Tomas Gunnarsson dbcf5d3918 Change return type of SetSendingStatus to be void. 
The eventual implementation of changing the status will be async so the
return value isn't that useful and was in fact only being used to log
a warning if an error occured.

This change is to facilitate upcoming changes related to media engine.

Bug: webrtc:11993
Change-Id: Ia7f85a9ea18b2648b511fa356918cf32a201461f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/215975
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33825}
2021-04-25 15:27:38 +00:00

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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_SENDER_H_
#define MODULES_RTP_RTCP_SOURCE_RTCP_SENDER_H_
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "absl/types/optional.h"
#include "api/call/transport.h"
#include "api/video/video_bitrate_allocation.h"
#include "modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h"
#include "modules/rtp_rtcp/include/receive_statistics.h"
#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.h"
#include "modules/rtp_rtcp/source/rtcp_packet/compound_packet.h"
#include "modules/rtp_rtcp/source/rtcp_packet/dlrr.h"
#include "modules/rtp_rtcp/source/rtcp_packet/loss_notification.h"
#include "modules/rtp_rtcp/source/rtcp_packet/report_block.h"
#include "modules/rtp_rtcp/source/rtcp_packet/tmmb_item.h"
#include "modules/rtp_rtcp/source/rtp_rtcp_interface.h"
#include "rtc_base/random.h"
#include "rtc_base/synchronization/mutex.h"
#include "rtc_base/thread_annotations.h"
namespace webrtc {
class RTCPReceiver;
class RtcEventLog;
class RTCPSender final {
public:
struct FeedbackState {
FeedbackState();
FeedbackState(const FeedbackState&);
FeedbackState(FeedbackState&&);
~FeedbackState();
uint32_t packets_sent;
size_t media_bytes_sent;
uint32_t send_bitrate;
uint32_t last_rr_ntp_secs;
uint32_t last_rr_ntp_frac;
uint32_t remote_sr;
std::vector<rtcp::ReceiveTimeInfo> last_xr_rtis;
// Used when generating TMMBR.
RTCPReceiver* receiver;
};
explicit RTCPSender(const RtpRtcpInterface::Configuration& config);
RTCPSender() = delete;
RTCPSender(const RTCPSender&) = delete;
RTCPSender& operator=(const RTCPSender&) = delete;
virtual ~RTCPSender();
RtcpMode Status() const RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetRTCPStatus(RtcpMode method) RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
bool Sending() const RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetSendingStatus(const FeedbackState& feedback_state,
bool enabled)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_); // combine the functions
int32_t SetNackStatus(bool enable) RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetTimestampOffset(uint32_t timestamp_offset)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
// TODO(bugs.webrtc.org/6458): Remove default parameter value when all the
// depending projects are updated to correctly set payload type.
void SetLastRtpTime(uint32_t rtp_timestamp,
int64_t capture_time_ms,
int8_t payload_type = -1)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetRtpClockRate(int8_t payload_type, int rtp_clock_rate_hz)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
uint32_t SSRC() const { return ssrc_; }
void SetRemoteSSRC(uint32_t ssrc) RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
int32_t SetCNAME(const char* cName) RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
bool TimeToSendRTCPReport(bool sendKeyframeBeforeRTP = false) const
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
int32_t SendRTCP(const FeedbackState& feedback_state,
RTCPPacketType packetType,
int32_t nackSize = 0,
const uint16_t* nackList = 0)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
int32_t SendLossNotification(const FeedbackState& feedback_state,
uint16_t last_decoded_seq_num,
uint16_t last_received_seq_num,
bool decodability_flag,
bool buffering_allowed)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetRemb(int64_t bitrate_bps, std::vector<uint32_t> ssrcs)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void UnsetRemb() RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
bool TMMBR() const RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetMaxRtpPacketSize(size_t max_packet_size)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetTmmbn(std::vector<rtcp::TmmbItem> bounding_set)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetCsrcs(const std::vector<uint32_t>& csrcs)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetTargetBitrate(unsigned int target_bitrate)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SetVideoBitrateAllocation(const VideoBitrateAllocation& bitrate)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
void SendCombinedRtcpPacket(
std::vector<std::unique_ptr<rtcp::RtcpPacket>> rtcp_packets)
RTC_LOCKS_EXCLUDED(mutex_rtcp_sender_);
private:
class RtcpContext;
class PacketSender;
absl::optional<int32_t> ComputeCompoundRTCPPacket(
const FeedbackState& feedback_state,
RTCPPacketType packet_type,
int32_t nack_size,
const uint16_t* nack_list,
PacketSender& sender) RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
// Determine which RTCP messages should be sent and setup flags.
void PrepareReport(const FeedbackState& feedback_state)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
std::vector<rtcp::ReportBlock> CreateReportBlocks(
const FeedbackState& feedback_state)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildSR(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildRR(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildSDES(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildPLI(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildREMB(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildTMMBR(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildTMMBN(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildAPP(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildLossNotification(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildExtendedReports(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildBYE(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildFIR(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void BuildNACK(const RtcpContext& context, PacketSender& sender)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
const bool audio_;
const uint32_t ssrc_;
Clock* const clock_;
Random random_ RTC_GUARDED_BY(mutex_rtcp_sender_);
RtcpMode method_ RTC_GUARDED_BY(mutex_rtcp_sender_);
RtcEventLog* const event_log_;
Transport* const transport_;
const int report_interval_ms_;
mutable Mutex mutex_rtcp_sender_;
bool sending_ RTC_GUARDED_BY(mutex_rtcp_sender_);
int64_t next_time_to_send_rtcp_ RTC_GUARDED_BY(mutex_rtcp_sender_);
uint32_t timestamp_offset_ RTC_GUARDED_BY(mutex_rtcp_sender_);
uint32_t last_rtp_timestamp_ RTC_GUARDED_BY(mutex_rtcp_sender_);
int64_t last_frame_capture_time_ms_ RTC_GUARDED_BY(mutex_rtcp_sender_);
// SSRC that we receive on our RTP channel
uint32_t remote_ssrc_ RTC_GUARDED_BY(mutex_rtcp_sender_);
std::string cname_ RTC_GUARDED_BY(mutex_rtcp_sender_);
ReceiveStatisticsProvider* receive_statistics_
RTC_GUARDED_BY(mutex_rtcp_sender_);
// send CSRCs
std::vector<uint32_t> csrcs_ RTC_GUARDED_BY(mutex_rtcp_sender_);
// Full intra request
uint8_t sequence_number_fir_ RTC_GUARDED_BY(mutex_rtcp_sender_);
rtcp::LossNotification loss_notification_ RTC_GUARDED_BY(mutex_rtcp_sender_);
// REMB
int64_t remb_bitrate_ RTC_GUARDED_BY(mutex_rtcp_sender_);
std::vector<uint32_t> remb_ssrcs_ RTC_GUARDED_BY(mutex_rtcp_sender_);
std::vector<rtcp::TmmbItem> tmmbn_to_send_ RTC_GUARDED_BY(mutex_rtcp_sender_);
uint32_t tmmbr_send_bps_ RTC_GUARDED_BY(mutex_rtcp_sender_);
uint32_t packet_oh_send_ RTC_GUARDED_BY(mutex_rtcp_sender_);
size_t max_packet_size_ RTC_GUARDED_BY(mutex_rtcp_sender_);
// True if sending of XR Receiver reference time report is enabled.
const bool xr_send_receiver_reference_time_enabled_;
RtcpPacketTypeCounterObserver* const packet_type_counter_observer_;
RtcpPacketTypeCounter packet_type_counter_ RTC_GUARDED_BY(mutex_rtcp_sender_);
RtcpNackStats nack_stats_ RTC_GUARDED_BY(mutex_rtcp_sender_);
VideoBitrateAllocation video_bitrate_allocation_
RTC_GUARDED_BY(mutex_rtcp_sender_);
bool send_video_bitrate_allocation_ RTC_GUARDED_BY(mutex_rtcp_sender_);
std::map<int8_t, int> rtp_clock_rates_khz_ RTC_GUARDED_BY(mutex_rtcp_sender_);
int8_t last_payload_type_ RTC_GUARDED_BY(mutex_rtcp_sender_);
absl::optional<VideoBitrateAllocation> CheckAndUpdateLayerStructure(
const VideoBitrateAllocation& bitrate) const
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
void SetFlag(uint32_t type, bool is_volatile)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
bool IsFlagPresent(uint32_t type) const
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
bool ConsumeFlag(uint32_t type, bool forced = false)
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
bool AllVolatileFlagsConsumed() const
RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_rtcp_sender_);
struct ReportFlag {
ReportFlag(uint32_t type, bool is_volatile)
: type(type), is_volatile(is_volatile) {}
bool operator<(const ReportFlag& flag) const { return type < flag.type; }
bool operator==(const ReportFlag& flag) const { return type == flag.type; }
const uint32_t type;
const bool is_volatile;
};
std::set<ReportFlag> report_flags_ RTC_GUARDED_BY(mutex_rtcp_sender_);
typedef void (RTCPSender::*BuilderFunc)(const RtcpContext&, PacketSender&);
// Map from RTCPPacketType to builder.
std::map<uint32_t, BuilderFunc> builders_;
};
} // namespace webrtc
#endif // MODULES_RTP_RTCP_SOURCE_RTCP_SENDER_H_
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