| // 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. |
| |
| #ifndef SRC_UI_A11Y_BIN_A11Y_TTS_LOG_ENGINE_H_ |
| #define SRC_UI_A11Y_BIN_A11Y_TTS_LOG_ENGINE_H_ |
| |
| #include <fuchsia/accessibility/tts/cpp/fidl.h> |
| #include <lib/fidl/cpp/binding_set.h> |
| #include <lib/sys/cpp/component_context.h> |
| |
| namespace a11y { |
| |
| // A simple Engine implementation to log incoming requests. |
| // |
| // this simple Engine after registration with Tts manager, only logs incoming |
| // speech requests. It is used temporary mostly for debugging purposes until a |
| // real Tts Engine is implemented. |
| class LogEngine : public fuchsia::accessibility::tts::Engine { |
| public: |
| // On construction, this class registers as an Engine with |
| // fuchsia.accessibility.tts.TtsManager service. |
| explicit LogEngine(std::unique_ptr<sys::ComponentContext> startup_context); |
| ~LogEngine() = default; |
| |
| private: |
| // |fuchsia.accessibility.tts.Engine| |
| void Enqueue(fuchsia::accessibility::tts::Utterance utterance, EnqueueCallback callback) override; |
| |
| // |fuchsia.accessibility.tts.Engine| |
| void Speak(SpeakCallback callback) override; |
| |
| // |fuchsia.accessibility.tts.Engine| |
| void Cancel(CancelCallback callback) override; |
| |
| // Holds all utterances added via Enqueue(). Gets cleared whenever Speak() is |
| // called. |
| std::vector<fuchsia::accessibility::tts::Utterance> utterances_; |
| // Bindings to the service implemented by this class. |
| fidl::BindingSet<fuchsia::accessibility::tts::Engine> bindings_; |
| |
| // Client-side of the Tts registry interface. |
| fuchsia::accessibility::tts::EngineRegistryPtr registry_; |
| }; |
| |
| } // namespace a11y |
| |
| #endif // SRC_UI_A11Y_BIN_A11Y_TTS_LOG_ENGINE_H_ |