Rocky
df1c5ff32c
Replace MLX GPU inference with CoreML bundles so transcription continues while the host app is backgrounded. Adds model download and warm-up, vendored Qwen3Speech, and updates onboarding, settings, and copy for the ~1.6 GB CoreML package (iOS 18+).
57 lines
2.1 KiB
Swift
57 lines
2.1 KiB
Swift
// LocalASRBackend.swift
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// OSGKeyboard · Shared
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//
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// Identifies which on-device speech recognition engine to use when the
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// user picks the "local" engine (no cloud LLM polish). The shared
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// factory `ASRServiceFactory` dispatches on this enum; the settings UI
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// renders it as a picker.
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//
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// Why an enum in `Shared` rather than living next to the concrete
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// `ASRService` implementations: the value must be serialisable into
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// the App Group store (so the keyboard extension can observe the
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// selection), exposed via `ProviderConfig` (UI binding) and consumed
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// by every layer that asks for an ASR backend.
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import Foundation
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public enum LocalASRBackend: String, CaseIterable, Identifiable, Sendable, Codable {
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/// iOS 26 `SpeechAnalyzer` + `DictationTranscriber`. Always
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/// on-device, no asset download, ships with iOS. Default for every
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/// fresh install — anything else is opt-in.
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case speechAnalyzer
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/// Qwen3-ASR-0.6B via CoreML (Neural Engine + CPU). Stronger on Chinese
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/// dialects and noisy audio than `SpeechAnalyzer`, works in Flow while
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/// the host app is backgrounded, but requires a ~1.6 GB download on first
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/// use and iOS 18+.
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case qwen3ASR
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public var id: String { rawValue }
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/// Localisation key for the human label in the settings picker.
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public var labelKey: String {
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switch self {
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case .speechAnalyzer: return "asr.backend.speechAnalyzer.label"
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case .qwen3ASR: return "asr.backend.qwen3.label"
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}
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}
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/// Localisation key for the one-line subtitle shown under the label.
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public var blurbKey: String {
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switch self {
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case .speechAnalyzer: return "asr.backend.speechAnalyzer.blurb"
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case .qwen3ASR: return "asr.backend.qwen3.blurb"
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}
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}
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/// Whether this backend needs the user to download a model file
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/// before it can run. Used to gate the "Downloading Qwen3-ASR" UI
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/// in a follow-up; for now we just expose the flag.
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public var requiresModelDownload: Bool {
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switch self {
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case .speechAnalyzer: return false
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case .qwen3ASR: return true
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}
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}
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}
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