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 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_ 6 #define CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_ 7 8 #include "base/compiler_specific.h" 9 #include "base/memory/ref_counted.h" 10 #include "content/public/browser/speech_recognition_event_listener.h" 11 #include "content/public/browser/speech_recognition_manager_delegate.h" 12 #include "content/public/browser/speech_recognition_session_config.h" 13 14 namespace speech { 15 16 // This is Chrome's implementation of the SpeechRecognitionManagerDelegate 17 // interface. 18 class ChromeSpeechRecognitionManagerDelegate 19 : public content::SpeechRecognitionManagerDelegate, 20 public content::SpeechRecognitionEventListener { 21 public: 22 ChromeSpeechRecognitionManagerDelegate(); 23 virtual ~ChromeSpeechRecognitionManagerDelegate(); 24 25 protected: 26 // SpeechRecognitionEventListener methods. 27 virtual void OnRecognitionStart(int session_id) OVERRIDE; 28 virtual void OnAudioStart(int session_id) OVERRIDE; 29 virtual void OnEnvironmentEstimationComplete(int session_id) OVERRIDE; 30 virtual void OnSoundStart(int session_id) OVERRIDE; 31 virtual void OnSoundEnd(int session_id) OVERRIDE; 32 virtual void OnAudioEnd(int session_id) OVERRIDE; 33 virtual void OnRecognitionEnd(int session_id) OVERRIDE; 34 virtual void OnRecognitionResults( 35 int session_id, const content::SpeechRecognitionResults& result) OVERRIDE; 36 virtual void OnRecognitionError( 37 int session_id, const content::SpeechRecognitionError& error) OVERRIDE; 38 virtual void OnAudioLevelsChange(int session_id, float volume, 39 float noise_volume) OVERRIDE; 40 41 // SpeechRecognitionManagerDelegate methods. 42 virtual void GetDiagnosticInformation(bool* can_report_metrics, 43 std::string* hardware_info) OVERRIDE; 44 virtual void CheckRecognitionIsAllowed( 45 int session_id, 46 base::Callback<void(bool ask_user, bool is_allowed)> callback) OVERRIDE; 47 virtual content::SpeechRecognitionEventListener* GetEventListener() OVERRIDE; 48 virtual bool FilterProfanities(int render_process_id) OVERRIDE; 49 50 // Callback called by |tab_watcher_| on the IO thread to signal tab closure. 51 virtual void TabClosedCallback(int render_process_id, int render_view_id); 52 53 private: 54 class OptionalRequestInfo; 55 class TabWatcher; 56 57 // Checks for VIEW_TYPE_TAB_CONTENTS host in the UI thread and notifies back 58 // the result in the IO thread through |callback|. 59 static void CheckRenderViewType( 60 base::Callback<void(bool ask_user, bool is_allowed)> callback, 61 int render_process_id, 62 int render_view_id); 63 64 scoped_refptr<OptionalRequestInfo> optional_request_info_; 65 scoped_refptr<TabWatcher> tab_watcher_; 66 67 DISALLOW_COPY_AND_ASSIGN(ChromeSpeechRecognitionManagerDelegate); 68 }; 69 70 } // namespace speech 71 72 #endif // CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_ 73