Talon
f348574bc1
Sleep-paced threads stall for hundreds of milliseconds when iOS coalesces a backgrounded app's wakeups, and the deadline resets that discarded the deficit left the capture backlog queued until its ring overflowed: regular dropouts that worsen the longer the app stays backgrounded. Pace both 20 ms hands-offs from the AVAudioSourceNode render callback instead (mix via Audio.RunCycle with deviceClockedAudio, capture handoff from the ring), wake the UDP sender on a queue signal instead of a 1 ms poll, and let stalled consumers drop their backlog to the buffer target instead of ratcheting it.
Apple clients
VoiceCat.Mac and VoiceCat.iOS are .NET 10 AppKit and UIKit clients over the shared managed
core. The ReplayKit upload extension under native/apple/broadcast remains Swift because it
runs under the extension memory limit and writes the versioned shared audio ring.
Build on macOS with Xcode and the pinned .NET workloads:
./scripts/build-native.ps1
./scripts/build-native-ios.sh
dotnet restore clients/apple/VoiceCat.Apple.slnx
dotnet build clients/apple/VoiceCat.Apple.slnx -c Debug --no-restore
Use publish-macos.sh --dry-run to validate a local ad-hoc macOS bundle. The dry-run build does
not enable hardened runtime because ad-hoc signatures have no Team ID and cannot satisfy macOS
library validation. The script normalizes nested signatures and installs the verified bundle at
both VoiceCat.Mac/bin/Release/net10.0-macos27.0/osx-arm64/VoiceCat.app and
VoiceCat.Mac/bin/Release/distribution/VoiceCat.app. Distribution builds remain hardened and
require VOICECAT_CODESIGN_IDENTITY; optional notarization uses APPLE_ID, APPLE_TEAM_ID, and
APPLE_APP_PASSWORD.
For a physical iOS device, use build-ios-device.sh and deploy-ios-device.sh. The host and
ReplayKit extension require signing profiles with App Group group.me.iamtalon.voicecat.
Hardware validation must cover VoiceOver, background and lock behavior, interruptions, route
changes, Bluetooth, ReplayKit, and iOS 27 ScreenCaptureKit audio.
For iOS voice stability, leave a call joined with the microphone active for at least 30 minutes
and confirm speech stays clear and VC_AUDIO reports no growing feedDrops. While still joined,
toggle Wi-Fi off and on, switch between Wi-Fi and cellular, and confirm the app stays open,
reconnects, and restores the voice session. Repeat with mono, stereo, and voice processing.
The iOS remote-user manual gate must also cover Users → user detail → independent microphone and screen-audio gain/mute controls, microphone receive noise reduction, the no-active-stream state, and Private Chats → conversation → User/audio settings. Repeat the navigation with VoiceOver and disconnect the remote user while its detail and conversation views are open.
App Store builds use the same device builder with --configuration Release. Set
VOICECAT_BUILD_NUMBER, VOICECAT_DISPLAY_VERSION, VOICECAT_DEVELOPMENT_TEAM, the host
VOICECAT_CODESIGN_KEY/VOICECAT_CODESIGN_PROVISION pair, and the extension
VOICECAT_BROADCAST_CODESIGN_KEY/VOICECAT_BROADCAST_CODESIGN_PROVISION pair. The host and
extension profiles must both be App Store Connect profiles and include the shared App Group.
The complete TestFlight workflow is documented in docs/apple-ios-release.md. The shared ring
contract is documented in docs/broadcast-ring-format.md.