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feat(ios): audio overhaul, Join/Leave Voice, channel-id sync fix, stereo mic capture

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Three iOS client problems fixed plus a new core stereo-mic capture ABI:

1. Channel-id sync bug (mic button permanently dimmed): SessionState never
   synced currentChannelId from the self user's channelId on connect, so the
   mic button (gated on currentChannelId == 0) stayed dimmed. Added
   syncSelfChannel() (mirrors macOS MainWindowController.swift:461,491,522);
   called from init/.channelList/.userJoined/.userLeft/.userUpdated/.joinResult.
   Added applyServerMuteState() + serverMuted/serverDeafened to VoiceState.

2. Join/Leave Voice button: replaced icon-only mic toggle with explicit
   text button (parity with macOS). Mute/deafen disable when not in voice.

3. IOSAudioRouter.swift (new): full AVAudioSession routing layer — input
   port selection, built-in mic orientation/polar patterns, Bluetooth
   HFP/A2DP/Off modes, Standard/Raw mic processing, stereo capture, AirPlay,
   UserDefaults persistence. AudioSessionManager delegates to it.

4. Core stereo-mic capture (append-only ABI): vc_set_capture_channels()
   lets the core open the mic device in stereo (2-ch interleaved). LocalStream
   gains capture_channels; ensure_audio_running reads it; audio_engine.cpp
   capture_accum_ + on_capture updated to channel-aware accumulation. Test
   test_stereo_mic_capture (headless, L!=R stereo round-trip). Swift wrapper
   VoiceCatClient.setCaptureChannels.

5. Settings UI rework: AVAudioSession-derived input/output tree replaces
   miniaudio device picker.

6. iOS deployment target raised to 18.0 (Package.swift + project.pbxproj).
   swift-tools-version 6.0 with swiftLanguageModes .v5.

Docs: tech-stack.md, architecture.md, voice.md, roadmap.md, building.md
updated; stale 'vc_audio_suspend/resume deferred' claims corrected.

Verified: ctest --preset dev 21/21 green; swift test 6/6 green;
xcodebuild -target VoiceCatiOS -sdk iphonesimulator BUILD SUCCEEDED.
This commit is contained in:
Talon
2026-06-19 13:17:52 +02:00
parent a10a18aebe
commit 9fc51cffc4
23 changed files with 861 additions and 83 deletions
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10
core/include/voicecat.h
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@@ -396,6 +396,16 @@ VC_API vc_result vc_get_stream_audio_config(vc_client* c, uint32_t user_id, uint
VC_API vc_result vc_test_inject_capture(vc_client* c, uint32_t stream_id, const int16_t* pcm,
size_t samples);
/* Set the capture channel count for a local MIC stream (1 = mono, 2 = stereo interleaved).
* Must be called after vc_stream_start; takes effect on the next AudioEngine restart (e.g. when
* joining voice, or immediately if the engine is already running — it stops and restarts the
* capture device with the new channel count). Defaults to 1 (mono). On iOS this lets the Swift
* AVAudioSession routing layer request stereo built-in mic capture via
* setPreferredInputNumberOfChannels(2) and then tell the core to open the capture device in
* stereo. VC_ERR_INVALID_ARG if stream_id is unknown, the stream is not a MIC stream, or
* channels is not 1 or 2. */
VC_API vc_result vc_set_capture_channels(vc_client* c, uint32_t stream_id, uint32_t channels);
/* ── Text ─────────────────────────────────────────────────────────────────── */
VC_API vc_result vc_send_text(vc_client* c, vc_text_scope scope, uint32_t target_id,
const char* utf8);