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Author SHA1 Message Date
Siavash Sameni
f265fd772d docs: relay concurrency model, Opus6k fix, build script fixes
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- ARCHITECTURE.md: new "Relay Concurrency Model" section documenting
  threading, shared state locking table, scaling characteristics, and
  the RoomManager Mutex as primary bottleneck
- PROGRESS.md: Opus6k frame starvation fix, build script fixes
- PRD-dred-integration.md: Opus6k frame starvation bug documentation

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-13 11:54:37 +04:00
Siavash Sameni
766c9df442 feat(dred): continuous DRED tuning, PMTUD, extended Opus6k window 
- DredTuner: maps live network metrics (loss/RTT/jitter) to continuous
  DRED duration every ~500ms instead of discrete tier-locked values.
  Includes jitter-spike detection for pre-emptive Starlink-style boost.
- Opus6k DRED extended from 500ms to 1040ms (max libopus 1.5 supports)
- PMTUD: quinn MtuDiscoveryConfig with upper_bound=1452, 300s interval
- TrunkedForwarder respects discovered MTU (was hard-coded 1200)
- QuinnPathSnapshot exposes quinn internal stats + discovered MTU
- AudioEncoder trait: set_expected_loss() + set_dred_duration() methods
- PathMonitor: sliding-window jitter variance for spike detection
- Integrated into both Android and desktop send tasks in engine.rs
- 14 new tests (10 tuner unit + 4 encoder integration)
- Updated ARCHITECTURE.md, PROGRESS.md, PRD-dred-integration, PRD-mtu

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-12 19:38:37 +04:00
Siavash Sameni
56e3417063 docs: add PRD for DRED integration and Opus-tier FEC simplification 
Plans the libopus 1.5.2 upgrade (audiopus → opusic-c/opusic-sys), DRED
enablement with tiered durations (100/200/500ms studio/normal/degraded),
removal of RaptorQ and Opus inband FEC from the Opus tiers, jitter buffer
lookahead/backfill refactor, and runtime escape hatch for rollout safety.
RaptorQ + current ratios preserved on Codec2 tiers (no DRED there).

Includes pre-flight verification findings: opusic-c Decoder inner pointer
is inaccessible (requires unified opusic-sys DecoderHandle), libopus 1.5
DRED API semantics clarified against xiph/opus opus.h, wire-format
backward compat verified on both live receive paths.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 19:57:01 +04:00