Files
chanora/crates/chanora_audio/src/lib.rs
T
EdisonJwa 5199e3d005 feat(ptt): full desktop backend ladder + missed-key-up watchdog (gen2 v0.9.3 follow-up)
Lands SDD-081..088 + SDD-092 implementations on top of v1.0.0-rc.3.
The cross-platform pieces — `AudioTransmitGate`, the per-platform
backend ladder, and the missed-key-up watchdog — are wired into the
audio engine lifecycle. Per-platform live verification on Windows
/ macOS / GNOME-Wayland reference hosts is the remaining work
(RR-PTT-001..006/008 in `release-readiness-go-nogo-record.md`).

`chanora_audio::ptt`
--------------------

  * `AudioTransmitGate` now owns an `Arc<AtomicBool>` plus a
    `tokio::sync::watch::Sender<bool>` (SAD-075 / SDD-089). The
    encoder feed reads the atomic on the hot path; the watchdog
    subscribes to the watch channel.
  * `MissedKeyUpWatchdog::spawn(gate, timeout)` watches the gate
    transitions and self-clears `transmit_active` if the
    `false -> true` lifetime exceeds the configured ceiling
    (DEC-028, default 30s). Two unit tests cover the timeout-fires
    and the no-fire-on-normal-release paths.

`chanora_audio::ptt_backends`
-----------------------------

  * `DesktopPttBackend` trait + `PttBinding` value type + `PttInputClass`
    enum + `PttBackendError` (SDD-081). `PttBinding` deliberately
    carries only `input_class` and an opaque `platform_key`
    string; raw key codes never appear in the type surface.
  * `select()` factory (SAD-071): runtime ladder evaluation per
    OS. Windows → Raw Input → low-level hook → Focused; macOS →
    Event Tap → Focused; Linux → GNOME-Wayland portal probe →
    Focused.
  * `FocusedPttBackend` (SDD-087): universal terminal fallback;
    integrates with the existing Flutter Listener-driven PTT.
  * `WindowsRawInputBackend` + `WindowsHookBackend` (SDD-083 /
    SDD-084): three-rung ladder evaluated once at engine start.
    Each backend runs a dedicated worker thread that holds the
    OS-level handle; `start`/`stop` lifecycle is honest. Live
    `RegisterRawInputDevices` / `SetWindowsHookEx` wiring is
    platform-verification work — the scaffolding lets the
    descriptor + watchdog + capability event be exercised
    end-to-end now.
  * `MacOSEventTapBackend` (SDD-085): two-rung ladder with
    explicit `PermissionState` (Granted / Denied / Undetermined).
    `Undetermined` resolves to `L0Focused` so capability
    advertising matches actual runtime behaviour even before
    Input Monitoring is granted. Live `CGEventTap` + `IOHIDCheckAccess`
    wiring is platform-verification work.
  * `LinuxGnomeWaylandBackend` (SDD-086): probes GNOME-on-Wayland
    via `XDG_SESSION_TYPE` + `XDG_CURRENT_DESKTOP`, then verifies
    the `org.freedesktop.portal.GlobalShortcuts` D-Bus interface
    is reachable by reading the `version` property over a
    blocking zbus session. Reports `gnome-wayland-portal` /
    `L2GlobalHoldToTalk`. Other Linux environments fall through
    to the universal Focused backend (DEC-025).

`chanora_audio::engine`
-----------------------

  * Engine now owns `transmit_gate: AudioTransmitGate` and
    threads a `flag_arc()` clone into the existing capture
    state for the cheap hot-path read. `set_transmit_active` /
    `transmit_active()` go through the gate so subscribers see
    every transition.
  * `start_audio` selects the highest-capability backend via
    `ptt_backends::select()`, calls `backend.start(gate, none())`,
    and spawns the watchdog. Both are released in `stop()` and
    on Drop.
  * New `engine.rebind_ptt(binding) -> PttBackendDescriptor`
    drives the binding-capture flow without restarting the engine.
  * New `engine.ptt_descriptor()` returns the privacy-safe
    descriptor for the initial UI render before the first
    capability event arrives.

`chanora_core`
--------------

  * Re-exports `PttBinding` + `PttInputClass`.
  * New `ChanoraSession::set_ptt_binding(binding)` — calls
    `audio.rebind_ptt` and broadcasts the freshly-published
    `SessionEvent::PttCapability` so the UI badge updates live.
  * New `ChanoraSession::ptt_descriptor()` for the initial render.

`chanora_bridge`
----------------

  * New `BridgePttInputClass` enum + `set_ptt_binding(input_class,
    platform_key)` async function. The `platform_key` string is
    opaque to the bridge and never logged.
  * New `ptt_descriptor()` async accessor returning the
    `(level, backend_id, bound_input_class)` triple.

Flutter
-------

  * `_AudioControls` now has a "Configure" button next to the
    capability badge; `_PttBindingCaptureDialog` captures the
    next key press (via `Focus.onKeyEvent`) or mouse side button
    (via `Listener.onPointerDown` filtered to button bitmasks
    `0x08` / `0x10`). The captured value is the platform-neutral
    `LogicalKeyboardKey.keyLabel` or `mouse-side-button:{button}`.
  * The dialog explicitly tells the user that the actual key
    value never leaves it (DEC-027).
  * New ARB keys: `pttConfigureAction`, `pttConfigureTitle`,
    `pttConfigurePrompt`, `pttConfigureWaiting`,
    `pttConfigureCaptured`, `pttConfigurePrivacyNote`,
    `pttConfigureSaveAction` (en + zh-Hans).

Dependencies
------------

  * `chanora_audio` adds (Linux only) `zbus = "5"` with the
    `tokio` runtime selector + `blocking-api` feature for the
    GlobalShortcuts portal probe.
  * `chanora_audio` adds `tokio` `test-util` to dev-deps for
    `start_paused` watchdog tests (the live watchdog tests use
    multi-threaded real time).

Verification
------------

  * `cargo test --workspace` with `CHANORA_DISABLE_KEYRING=1`:
    57 tests green (was 53). chanora_audio rises from 4 to 8.
  * `cargo deny check`: advisories ok, bans ok, licenses ok,
    sources ok.
  * `cargo about generate --offline`: regenerates
    `docs/security/license-inventory.{md,html}`. The crate count
    rises from 364 to 383 with the addition of the zbus tree.
  * `tools/dump_flutter_licenses.sh`: 94 packages, zero without
    LICENSE (unchanged).
  * `flutter analyze`: clean.
  * `cargo build -p chanora_bridge --release` + `flutter build
    linux --release`: clean Linux x86_64 bundle.

Documentation
-------------

  * `docs/release/release-readiness-go-nogo-record.md` flips
    RR-PTT-007 (missed-key-up watchdog) to Done with a pointer
    to the two passing unit tests; bumps to v0.9.4. Live
    per-platform traces (RR-PTT-001..005, RR-PTT-008) remain
    open and are blocked only on platform reference hosts.

Per-platform live verification (Raw Input registration, Event Tap
creation under granted permission, GlobalShortcuts CreateSession +
BindShortcuts) is queued for the platform owners' reference hosts
per `staged-release-plan.md`.
2026-05-15 15:38:42 +08:00

105 lines
3.3 KiB
Rust

//! # `chanora_audio`
//!
//! Audio subsystem promoted from `poc/audio-capture-playback-spike`
//! and wired against `chanora_protocol`'s voice channels.
//!
//! ## What's wired in this Beta
//!
//! * Default-input capture via `cpal` (DEC-011.1)
//! * Frame-aligned 20 ms / 48 kHz mono Opus encoding via `audiopus`
//! * Forward encoded frames to the protocol crate as `OutPacket`s
//! * Inbound voice packets fed to `tsclientlib::audio::AudioHandler`
//! which owns Opus decode + per-client jitter buffer + mix
//! * Mixed f32 PCM pulled by the cpal output callback at 48 kHz stereo
//! * Push-to-talk: capture stream is permanently open; encoding is
//! gated by an atomic `ptt_active` flag
//!
//! ## What's NOT wired in this Beta
//!
//! * AEC / AGC / NS / HPF DSP chain (DEC-007/008/009/010 — Beta+
//! work; the toggles in `AudioEffects` are honoured by *naming*
//! but the filters are no-ops)
//! * Mobile audio paths (DEC-011.1 desktop + Android proven; this
//! integration is desktop-only for v0.2.0-beta.1)
//! * Hot-plug device-change handling
//! * Sample-rate adaptation if the device cannot do 48 kHz / mono in
//! the format we request (returns `AudioError::StreamConfig`)
//! * Multi-channel speaker layouts beyond stereo
#![warn(missing_docs)]
mod engine;
pub mod ptt;
pub mod ptt_backends;
pub use engine::{AudioEngine, AudioEngineConfig};
pub use ptt::{
AudioTransmitGate, MissedKeyUpWatchdog, PttBackendDescriptor, PttCapabilityLevel,
};
pub use ptt_backends::{
select as select_ptt_backend, DesktopPttBackend, FocusedPttBackend, PttBackendError,
PttBinding, PttInputClass,
};
use thiserror::Error;
/// Errors raised by the audio subsystem.
#[derive(Debug, Error)]
pub enum AudioError {
/// Platform did not expose a usable default input device.
#[error("no default input device")]
NoInputDevice,
/// Platform did not expose a usable default output device.
#[error("no default output device")]
NoOutputDevice,
/// The audio backend rejected a stream configuration.
#[error("stream config rejected: {0}")]
StreamConfig(String),
/// Opus codec init/encode/decode failure.
#[error("opus: {0}")]
Opus(String),
/// A backend-specific failure surfaced without a typed mapping.
#[error("audio backend: {0}")]
Backend(String),
}
/// Audio-effect toggles. Defaults match DEC-007 (AEC),
/// DEC-008 (AGC), DEC-009 (NS), DEC-010 (HPF) — all enabled.
///
/// Note: in Beta v0.2.0-beta.1 the actual DSP filters are not yet
/// implemented; the struct is kept here as the public API surface so
/// later work can flip an internal flag without breaking callers.
#[derive(Debug, Clone, Copy)]
pub struct AudioEffects {
/// Acoustic echo cancellation (DEC-007).
pub aec: bool,
/// Automatic gain control (DEC-008).
pub agc: bool,
/// Noise suppression (DEC-009).
pub noise_suppression: bool,
/// High-pass filter (DEC-010).
pub high_pass: bool,
}
impl Default for AudioEffects {
fn default() -> Self {
Self {
aec: true,
agc: true,
noise_suppression: true,
high_pass: true,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn defaults_match_decisions() {
let e = AudioEffects::default();
assert!(e.aec && e.agc && e.noise_suppression && e.high_pass);
}
}