blob: 62da56a287452216111ffc3d82c31dc28d0ac285 [file] [log] [blame]
// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library fuchsia.accessibility.tts;
/// An interface for TTS Engines provide speech output.
protocol EngineRegistry {
/// A TTS engine registers itself to start listening for incoming speech
/// output requests through `engine`.
/// At the moment, only one TTS Engine can be registered at a time.
/// This registry owners the first engine to register itself.
/// If an engine crashes and wants to register again, calling this method
/// will restart the connection. An error is returned if another engine is
/// already registered.
RegisterEngine(Engine engine) -> () error Error;