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[feat] introduce fraction lost into congestion control module

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This commit is contained in:
dijunkun
2025-03-04 17:39:54 +08:00
parent ebfeaf4754
commit cf374a0ff3
28 changed files with 187 additions and 107 deletions
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43
src/transport/ice_transport.cpp
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@@ -299,6 +299,38 @@ bool IceTransport::ParseRtcpPacket(const uint8_t *buffer, size_t size,
return true;
}
void IceTransport::HandleReportBlock(const RtcpReportBlock &rtcp_report_block,
RtcpPacketInfo *packet_information,
uint32_t remote_ssrc) {
int64_t now = clock_->CurrentTime();
RtcpReportBlock report_block_data;
int64_t now_ntp = clock_->ConvertToNtpTime(now);
// Number of seconds since 1900 January 1 00:00 GMT (see
// https://tools.ietf.org/html/rfc868).
report_block_data.SetReportBlock(remote_ssrc, rtcp_report_block,
clock_->NtpToUtc(now_ntp), now);
uint32_t send_time_ntp = rtcp_report_block.LastSr();
if (send_time_ntp != 0) {
uint32_t delay_ntp = rtcp_report_block.DelaySinceLastSr();
// Local NTP time.
constexpr uint64_t kNtpFractionalUnit = 0x100000000;
uint32_t seconds = now_ntp / kNtpFractionalUnit;
uint32_t fractions = now_ntp % kNtpFractionalUnit;
uint32_t receive_time_ntp = (seconds << 16) | (fractions >> 16);
// RTT in 1/(2^16) seconds.
uint32_t rtt_ntp = receive_time_ntp - delay_ntp - send_time_ntp;
// Convert to 1/1000 seconds (milliseconds).
int64_t rtt = static_cast<int64_t>((rtt_ntp * 1000) / (1 << 16));
report_block_data.AddRoundTripTimeSample(rtt);
packet_information->rtt = rtt;
}
packet_information->report_block_datas.push_back(report_block_data);
}
bool IceTransport::HandleSenderReport(const RtcpCommonHeader &rtcp_block,
RtcpPacketInfo *rtcp_packet_info) {
SenderReport sender_report;
@@ -319,8 +351,17 @@ bool IceTransport::HandleReceiverReport(const RtcpCommonHeader &rtcp_block,
return false;
}
const uint32_t remote_ssrc = receiver_report.SenderSsrc();
rtcp_packet_info->remote_ssrc = remote_ssrc;
for (const RtcpReportBlock &rtcp_report_block :
receiver_report.GetReportBlocks()) {
HandleReportBlock(rtcp_report_block, rtcp_packet_info, remote_ssrc);
}
if (ice_transport_controller_) {
ice_transport_controller_->OnReceiverReport(receiver_report);
ice_transport_controller_->OnReceiverReport(
rtcp_packet_info->report_block_datas);
}
return true;
}