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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "chrome/browser/speech/tts_platform.h" | 5 #include "chrome/browser/speech/tts_platform.h" |
| 6 | 6 |
| 7 // Chrome OS doesn't have native TTS, instead it includes a built-in | 7 // Chrome OS doesn't have native TTS, instead it includes a built-in |
| 8 // component extension that provides speech synthesis. This class includes | 8 // component extension that provides speech synthesis. This class includes |
| 9 // an implementation of LoadBuiltInTtsExtension and dummy implementations of | 9 // an implementation of LoadBuiltInTtsExtension and dummy implementations of |
| 10 // everything else. | 10 // everything else. |
| 11 | 11 |
| 12 class TtsPlatformImplChromeOs : public TtsPlatformImpl { | 12 class TtsPlatformImplChromeOs : public TtsPlatformImpl { |
| 13 public: | 13 public: |
| 14 // TtsPlatformImpl overrides: | 14 // TtsPlatformImpl overrides: |
| 15 virtual bool PlatformImplAvailable() OVERRIDE { | 15 virtual bool PlatformImplAvailable() override { |
| 16 return false; | 16 return false; |
| 17 } | 17 } |
| 18 | 18 |
| 19 virtual bool LoadBuiltInTtsExtension( | 19 virtual bool LoadBuiltInTtsExtension( |
| 20 content::BrowserContext* browser_context) OVERRIDE { | 20 content::BrowserContext* browser_context) override { |
| 21 TtsEngineDelegate* tts_engine_delegate = | 21 TtsEngineDelegate* tts_engine_delegate = |
| 22 TtsController::GetInstance()->GetTtsEngineDelegate(); | 22 TtsController::GetInstance()->GetTtsEngineDelegate(); |
| 23 if (tts_engine_delegate) | 23 if (tts_engine_delegate) |
| 24 return tts_engine_delegate->LoadBuiltInTtsExtension(browser_context); | 24 return tts_engine_delegate->LoadBuiltInTtsExtension(browser_context); |
| 25 return false; | 25 return false; |
| 26 } | 26 } |
| 27 | 27 |
| 28 virtual bool Speak( | 28 virtual bool Speak( |
| 29 int utterance_id, | 29 int utterance_id, |
| 30 const std::string& utterance, | 30 const std::string& utterance, |
| 31 const std::string& lang, | 31 const std::string& lang, |
| 32 const VoiceData& voice, | 32 const VoiceData& voice, |
| 33 const UtteranceContinuousParameters& params) OVERRIDE { | 33 const UtteranceContinuousParameters& params) override { |
| 34 return false; | 34 return false; |
| 35 } | 35 } |
| 36 | 36 |
| 37 virtual bool StopSpeaking() OVERRIDE { | 37 virtual bool StopSpeaking() override { |
| 38 return false; | 38 return false; |
| 39 } | 39 } |
| 40 | 40 |
| 41 virtual void Pause() OVERRIDE {} | 41 virtual void Pause() override {} |
| 42 | 42 |
| 43 virtual void Resume() OVERRIDE {} | 43 virtual void Resume() override {} |
| 44 | 44 |
| 45 virtual bool IsSpeaking() OVERRIDE { | 45 virtual bool IsSpeaking() override { |
| 46 return false; | 46 return false; |
| 47 } | 47 } |
| 48 | 48 |
| 49 virtual void GetVoices(std::vector<VoiceData>* out_voices) OVERRIDE { | 49 virtual void GetVoices(std::vector<VoiceData>* out_voices) override { |
| 50 } | 50 } |
| 51 | 51 |
| 52 // Get the single instance of this class. | 52 // Get the single instance of this class. |
| 53 static TtsPlatformImplChromeOs* GetInstance(); | 53 static TtsPlatformImplChromeOs* GetInstance(); |
| 54 | 54 |
| 55 private: | 55 private: |
| 56 TtsPlatformImplChromeOs() {} | 56 TtsPlatformImplChromeOs() {} |
| 57 virtual ~TtsPlatformImplChromeOs() {} | 57 virtual ~TtsPlatformImplChromeOs() {} |
| 58 | 58 |
| 59 friend struct DefaultSingletonTraits<TtsPlatformImplChromeOs>; | 59 friend struct DefaultSingletonTraits<TtsPlatformImplChromeOs>; |
| 60 | 60 |
| 61 DISALLOW_COPY_AND_ASSIGN(TtsPlatformImplChromeOs); | 61 DISALLOW_COPY_AND_ASSIGN(TtsPlatformImplChromeOs); |
| 62 }; | 62 }; |
| 63 | 63 |
| 64 // static | 64 // static |
| 65 TtsPlatformImpl* TtsPlatformImpl::GetInstance() { | 65 TtsPlatformImpl* TtsPlatformImpl::GetInstance() { |
| 66 return TtsPlatformImplChromeOs::GetInstance(); | 66 return TtsPlatformImplChromeOs::GetInstance(); |
| 67 } | 67 } |
| 68 | 68 |
| 69 // static | 69 // static |
| 70 TtsPlatformImplChromeOs* | 70 TtsPlatformImplChromeOs* |
| 71 TtsPlatformImplChromeOs::GetInstance() { | 71 TtsPlatformImplChromeOs::GetInstance() { |
| 72 return Singleton<TtsPlatformImplChromeOs>::get(); | 72 return Singleton<TtsPlatformImplChromeOs>::get(); |
| 73 } | 73 } |
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