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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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20
src/common/clock/system_clock.cpp
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@@ -15,7 +15,7 @@
#include <windows.h>
#endif
int64_t ConvertToNtpTime(int64_t time_us) {
int64_t SystemClock::ConvertToNtpTime(int64_t time_us) {
constexpr int64_t kMicrosecondsPerSecond = 1000000;
constexpr uint64_t kNtpFractionalUnit = 0x100000000; // 2^32
uint32_t seconds = static_cast<uint32_t>(time_us / kMicrosecondsPerSecond);
@@ -120,3 +120,21 @@ int64_t SystemClock::CurrentUtcTimeMs() {
int64_t SystemClock::CurrentUtcTime() {
return CurrentUtcTimeNs() / 1000000000LL;
}
int64_t SystemClock::NtpToUtc(int64_t ntp_time) {
constexpr int64_t kNtpEpochOffset =
2208988800LL; // NTP epoch starts at 1900-01-01, Unix epoch starts at
// 1970-01-01
constexpr int64_t kMicrosecondsPerSecond = 1000000;
constexpr uint64_t kNtpFractionalUnit = 0x100000000; // 2^32
uint32_t seconds = static_cast<uint32_t>(ntp_time / kNtpFractionalUnit);
uint32_t fractions = static_cast<uint32_t>(ntp_time % kNtpFractionalUnit);
int64_t unix_seconds = static_cast<int64_t>(seconds) - kNtpEpochOffset;
int64_t microseconds =
(static_cast<int64_t>(fractions) * kMicrosecondsPerSecond) /
kNtpFractionalUnit;
return unix_seconds * kMicrosecondsPerSecond + microseconds;
}

4
src/common/clock/system_clock.h
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@@ -29,6 +29,10 @@ class SystemClock {
int64_t CurrentUtcTimeMs();
int64_t CurrentUtcTimeUs();
int64_t CurrentUtcTimeNs();
int64_t ConvertToNtpTime(int64_t time_us);
int64_t NtpToUtc(int64_t ntp_time);
};
#endif