Centralize PTT and voice audio-session ownership, harden courier/bridge/outbox delivery and recovery, correct location and delivery-state races, add privacy/release metadata, and ship reproducible universal Arti slices with Release CI coverage.
Validated by the full iOS suite, repeated audio/fragment/performance regressions, BitFoundation tests, strict lint and dead-code analysis, universal iOS Release builds, and iOS/macOS archives.
* Live push-to-talk voice for DMs: stream while you talk, voice note as fallback
Holding the mic in a DM now streams AAC frames live over the Noise session
(walkie-talkie style, ~0.5s mouth-to-ear at one hop) while recording the same
audio as a normal voice note. On release the note ships through the existing
fileTransfer pipeline; receivers that heard the live stream absorb it silently
into the same bubble (matched by the burst ID embedded in the file name), so
reliability comes for free and nobody sees duplicates.
Protocol:
- NoisePayloadType.voiceFrame = 0x08 carrying VoiceBurstPacket
(burstID + seq + START/data/END/CANCELED, length-prefixed AAC frames)
- 210-byte burst-content budget keeps each Noise packet inside the 256-byte
padding bucket: one BLE frame, never the fragment scheduler
- fire-and-forget: frames are dropped (never queued) without an established
session; live is only offered when the peer is mesh-reachable
Receive:
- ChatLiveVoiceCoordinator assembles bursts (jitter-ordered, 0.5s gap skip,
3s idle end, flood/size caps), persists progressively as ADTS .aac so even
a partial burst is a replayable bubble
- live autoplay only when the conversation is on screen, app active, and the
new app-info "live voice messages" toggle is on (also gates live sending)
- one-playback-at-a-time via a shared ExclusivePlayback slot
Capture:
- PTTCaptureEngine taps AVAudioEngine, dual-encodes: live AAC frames + the
finalized .m4a (same 16kHz/mono/16kbps settings as VoiceRecorder)
- VoiceRecordingViewModel now drives a pluggable VoiceCaptureSession; the
composer HUD shows a pulsing LIVE treatment when streaming
Includes the push-to-talk design doc, 6 new localization keys across all 29
locales, and unit tests for framing, packetizer budget, ADTS output, codec
round-trip, and the assembly/absorb lifecycle. Public-mesh PTT (MessageType
0x29) lands separately on top of this.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* PTT follow-ups from review + field test: peer-ID normalization, toggle gates inbound, drop-path diagnostics
Codex review fixes (#1403):
- makeVoiceCaptureSession normalizes the selected peer with toShort() before
the reachability/session checks and binds the send target to that same
routing ID — a conversation selected under the stable 64-hex Noise key no
longer silently falls back to a classic note while the short-ID session is
established
- the live-voice toggle now gates inbound bursts too: off means
classic-notes-only in both directions (no live bubble, partial file, or
early notification; the finalized note still arrives), with a test
Field-test diagnostics (first device run: DM frames decrypted but no bubble
appeared, with no log evidence of which guard dropped them):
- coordinator logs undecodable frames (size + hex prefix) and blocked drops
- makeAssembly logs directory/file-handle failures instead of returning nil
silently
- PTTLiveVoiceSession logs capture start and finish (packet/frame/duration
counts); PTTCaptureEngine logs engine start success/failure with the input
format; BLEService.sendVoiceFrame logs no-session drops
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* Fix iPhone live-capture failure: dead input unit (AURemoteIO -10851, 0 Hz)
Field testing showed the phone's live capture failing at mic enable with
AURemoteIO -10851 and an input format of 0 Hz / 2 ch — an input unit bound
to an earlier (playback-only or settling) audio session. The Mac, which has
no session lifecycle, captured fine, which is why public bursts from the Mac
worked while phone-side sends degraded from working (first hold) to sporadic
to dead across holds.
Three layers of defense:
- PTTCaptureEngine recreates its AVAudioEngine on every start(), after the
session is configured, so the input unit binds to the session that is
active now; a dead input (0 Hz or 0 channels) is now a distinct, logged
error instead of a silent setup failure
- PTTLiveVoiceSession retries the capture start once after a 150 ms
route-settle pause
- VoiceRecordingViewModel falls back to the classic VoiceRecorder within the
same hold if the live engine still cannot start — a route glitch now costs
the live stream, never the voice note
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---------
Co-authored-by: jack <jackjackbits@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
