| // Copyright 2014 The Chromium 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 CHROME_BROWSER_SPEECH_SPEECH_RECOGNIZER_H_ |
| #define CHROME_BROWSER_SPEECH_SPEECH_RECOGNIZER_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| |
| namespace content { |
| struct SpeechRecognitionSessionPreamble; |
| } |
| |
| namespace network { |
| class SharedURLLoaderFactoryInfo; |
| } |
| |
| class SpeechRecognizerDelegate; |
| |
| // SpeechRecognizer is a wrapper around the speech recognition engine that |
| // simplifies its use from the UI thread. This class handles all setup/shutdown, |
| // collection of results, error cases, and threading. |
| class SpeechRecognizer { |
| public: |
| SpeechRecognizer(const base::WeakPtr<SpeechRecognizerDelegate>& delegate, |
| std::unique_ptr<network::SharedURLLoaderFactoryInfo> |
| shared_url_loader_factory_info, |
| const std::string& accept_language, |
| const std::string& locale); |
| ~SpeechRecognizer(); |
| |
| // Start/stop the speech recognizer. |preamble| contains the preamble audio to |
| // log if auth parameters are available. |
| // Must be called on the UI thread. |
| void Start( |
| const scoped_refptr<content::SpeechRecognitionSessionPreamble>& preamble); |
| void Stop(); |
| |
| private: |
| class EventListener; |
| |
| base::WeakPtr<SpeechRecognizerDelegate> delegate_; |
| scoped_refptr<EventListener> speech_event_listener_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SpeechRecognizer); |
| }; |
| |
| #endif // CHROME_BROWSER_SPEECH_SPEECH_RECOGNIZER_H_ |