// This class allows us to store unencoded RTC events. Subclasses of this class // store the actual information. This allows us to keep all unencoded events, // even when their type and associated information differ, in the same buffer. // Additionally, it prevents dependency leaking - a module that only logs // events of type RtcEvent_A doesn't need to know about anything associated // with events of type RtcEvent_B. class RtcEvent { public: // Subclasses of this class have to associate themselves with a unique value // of Type. This leaks the information of existing subclasses into the // superclass, but the *actual* information - rtclog::StreamConfig, etc. - // is kept separate.
enum class Type : uint32_t {
AlrStateEvent,
RouteChangeEvent,
RemoteEstimateEvent,
AudioNetworkAdaptation,
AudioPlayout,
AudioReceiveStreamConfig,
AudioSendStreamConfig,
BweUpdateDelayBased,
BweUpdateLossBased,
BweUpdateScream,
DtlsTransportState,
DtlsWritableState,
IceCandidatePairConfig,
IceCandidatePairEvent,
ProbeClusterCreated,
ProbeResultFailure,
ProbeResultSuccess,
RtcpPacketIncoming,
RtcpPacketOutgoing,
RtpPacketIncoming,
RtpPacketOutgoing,
VideoReceiveStreamConfig,
VideoSendStreamConfig,
FrameDecoded,
NetEqSetMinimumDelay,
BeginV3Log = 0x2501580,
EndV3Log = 0x2501581,
FakeEvent, // For unit testing.
};
// Events are grouped by Type before being encoded. // Optionally, `GetGroupKey` can be overloaded to group the // events by a secondary key (in addition to the event type.) // This can, in some cases, improve compression efficiency // e.g. by grouping events by SSRC. virtual uint32_t GetGroupKey() const { return0; }
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