Node / meshtastic / Meshtastic-Android / files / feature / firmware / src / commonMain / kotlin / org / meshtastic / feature / firmware / ota / ThroughputTracker.kt

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T8b949e/*

* Copyright (c) 2026 Meshtastic LLC

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <https://www.gnu.org/licenses/>.

*/

Tff7b72package T7ee787org.meshtastic.feature.firmware.ota

Tff7b72import T7ee787kotlin.time.TimeSource

Tff7b72private Tff7b72const Tff7b72val Te6edf3MILLIS_PER_SECOND Tff7b72= T79c0ff1T79c0ff0T79c0ff0T79c0ff0L

T8b949e/**

* Sliding window throughput tracker to calculate current transfer speed in bytes per second. Adapted from kmp-ble's

* DfuProgress throughput tracking.

*/

Tff7b72class T56d364ThroughputTrackerTb4b4b4(Tff7b72private Tff7b72val Te6edf3windowSizeTb4b4b4: Tffa657Int Tff7b72= T79c0ff1T79c0ff0Tb4b4b4, Tff7b72private Tff7b72val Te6edf3timeSourceTb4b4b4: Te6edf3TimeSource Tff7b72= Te6edf3TimeSourceTb4b4b4.Te6edf3MonotonicTb4b4b4) Tb4b4b4{

Tff7b72private Tff7b72val Te6edf3timestamps Tff7b72= Te6edf3LongArrayTb4b4b4(Te6edf3windowSizeTb4b4b4)

Tff7b72private Tff7b72val Te6edf3byteCounts Tff7b72= Te6edf3LongArrayTb4b4b4(Te6edf3windowSizeTb4b4b4)

Tff7b72private Tff7b72var Te6edf3head Tff7b72= T79c0ff0

Tff7b72private Tff7b72var Te6edf3size Tff7b72= T79c0ff0

Tff7b72private Tff7b72val Te6edf3startMark Tff7b72= Te6edf3timeSourceTb4b4b4.Te6edf3markNowTb4b4b4(Tb4b4b4)

T8b949e/** Record that [bytesSent] total bytes have been sent at the current time. */

Tff7b72fun Td2a8ffrecordTb4b4b4(Te6edf3bytesSentTb4b4b4: Tffa657LongTb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3elapsed Tff7b72= Te6edf3startMarkTb4b4b4.Te6edf3elapsedNowTb4b4b4(Tb4b4b4)Tb4b4b4.Te6edf3inWholeMilliseconds

Te6edf3timestampsTff7b72[Te6edf3headTff7b72] Tff7b72= Te6edf3elapsed

Te6edf3byteCountsTff7b72[Te6edf3headTff7b72] Tff7b72= Te6edf3bytesSent

Te6edf3head Tff7b72= Tb4b4b4(Te6edf3head Tff7b72+ T79c0ff1Tb4b4b4) Tff7b72% Te6edf3windowSize

Tff7b72if Tb4b4b4(Te6edf3size Tff7b72< Te6edf3windowSizeTb4b4b4) Te6edf3sizeTff7b72+Tff7b72+

Tb4b4b4}

T8b949e/** Returns the current throughput in bytes per second based on the sliding window. */

Tf0883e@SuppressTb4b4b4(Ta5d6ff"Ta5d6ffReturnCountTa5d6ff"Tb4b4b4)

Tff7b72fun Td2a8ffbytesPerSecondTb4b4b4(Tb4b4b4)Tb4b4b4: Tffa657Long Tb4b4b4{

Tff7b72if Tb4b4b4(Te6edf3size Tff7b72< T79c0ff2Tb4b4b4) Tff7b72return T79c0ff0

Tff7b72val Te6edf3oldestIdx Tff7b72= Tff7b72if Tb4b4b4(Te6edf3size Tff7b72< Te6edf3windowSizeTb4b4b4) T79c0ff0 Tff7b72else Te6edf3head

Tff7b72val Te6edf3newestIdx Tff7b72= Tb4b4b4(Te6edf3head Tff7b72- T79c0ff1 Tff7b72+ Te6edf3windowSizeTb4b4b4) Tff7b72% Te6edf3windowSize

Tff7b72val Te6edf3durationMs Tff7b72= Te6edf3timestampsTff7b72[Te6edf3newestIdxTff7b72] Tff7b72- Te6edf3timestampsTff7b72[Te6edf3oldestIdxTff7b72]

Tff7b72if Tb4b4b4(Te6edf3durationMs Tff7b72<Tff7b72= T79c0ff0Tb4b4b4) Tff7b72return T79c0ff0

Tff7b72val Te6edf3deltaBytes Tff7b72= Te6edf3byteCountsTff7b72[Te6edf3newestIdxTff7b72] Tff7b72- Te6edf3byteCountsTff7b72[Te6edf3oldestIdxTff7b72]

Tff7b72return Tb4b4b4(Te6edf3deltaBytes Tff7b72* Te6edf3MILLIS_PER_SECONDTb4b4b4) Tff7b72/ Te6edf3durationMs

Tb4b4b4}

Tb4b4b4}